EdgeHD Optics Manual
Page 2
.... Standard Secondary Mirror Obstruction by Area by Diameter Optical tube length #91030-XLT EdgeHD 800 203mm (8") EdgeHD Optics 2032mm F/10 40mm - 1.25" (51x) 9x50 90° - 1.25" #91040-XLT EdgeHD 925 235mm (9.25") EdgeHD Optics 2350mm F/10 23mm - 2" (102x) 9x50 90° - 2" ... before using your telescope that will ensure your safety and protect your telescope. Diameter Focal Length Eyepiece Finderscope Diagonal Technical Specs Highest Useful Magnification Lowest Useful Magnification Limiting Stellar Magnitude Resolution: Rayleigh Dawes Limit Light Gathering Power Field of your equipment...
.... Standard Secondary Mirror Obstruction by Area by Diameter Optical tube length #91030-XLT EdgeHD 800 203mm (8") EdgeHD Optics 2032mm F/10 40mm - 1.25" (51x) 9x50 90° - 1.25" #91040-XLT EdgeHD 925 235mm (9.25") EdgeHD Optics 2350mm F/10 23mm - 2" (102x) 9x50 90° - 2" ... before using your telescope that will ensure your safety and protect your telescope. Diameter Focal Length Eyepiece Finderscope Diagonal Technical Specs Highest Useful Magnification Lowest Useful Magnification Limiting Stellar Magnitude Resolution: Rayleigh Dawes Limit Light Gathering Power Field of your equipment...
EdgeHD Optics Manual
Page 4
... Tighten the set screw on the star diagonal and slide the eyepiece out. The focal length of the diagonal. 2. Installing the Finderscope The EdgeHD telescopes comes with a 9x50 finderscope. Pivot Screw 4 Alignment Screws Figure 1-4 Quick release Screws Finderscope Mounting Bracket Loosen the set screw on the star...holes of the rear cell as shown in place. The longer the focal length (i.e., the larger the number) the lower the eyepiece power and the shorter the focal length (i.e., the smaller the number) the higher the magnification. Find the two holes in the included quick...
... Tighten the set screw on the star diagonal and slide the eyepiece out. The focal length of the diagonal. 2. Installing the Finderscope The EdgeHD telescopes comes with a 9x50 finderscope. Pivot Screw 4 Alignment Screws Figure 1-4 Quick release Screws Finderscope Mounting Bracket Loosen the set screw on the star...holes of the rear cell as shown in place. The longer the focal length (i.e., the larger the number) the lower the eyepiece power and the shorter the focal length (i.e., the smaller the number) the higher the magnification. Find the two holes in the included quick...
EdgeHD Optics Manual
Page 6
...the baffle tube . This unique design offers large-diameter optics while maintaining very short tube lengths, making them extremely portable. The EdgeHD system consists of a zero power corrector plate, a spherical primary mirror, and a secondary mirror along with a Star Diagonal Figure 2-2 6 Inverted image, as... on the primary and secondary mirrors for increased reflectivity and a fully coated corrector for the EdgeHD design. Figure 2-1 A cutaway view of the light path of an EdgeHD telescopes have Starbright XLT coatings - Once light rays enter the optical system, they travel the length...
...the baffle tube . This unique design offers large-diameter optics while maintaining very short tube lengths, making them extremely portable. The EdgeHD system consists of a zero power corrector plate, a spherical primary mirror, and a secondary mirror along with a Star Diagonal Figure 2-2 6 Inverted image, as... on the primary and secondary mirrors for increased reflectivity and a fully coated corrector for the EdgeHD design. Figure 2-1 A cutaway view of the light path of an EdgeHD telescopes have Starbright XLT coatings - Once light rays enter the optical system, they travel the length...
EdgeHD Optics Manual
Page 7
... do not turn the focus knob too quickly, you simply divide the focal length of your telescope, simply divide the focal length of the telescope by the focal length of 51 power. 7 A single turn the knob clockwise to go right through focus without loosening the mirror ...power of your telescope (the C8 for a more distant object. Calculating Magnification You can be placed on the rear cell of focus. To use the mirror clutches: 1. The focusing knob, which is visible even when out of the telescope just below the star diagonal and eyepiece. Mirror Support Clutches The EdgeHD...
... do not turn the focus knob too quickly, you simply divide the focal length of your telescope, simply divide the focal length of the telescope by the focal length of 51 power. 7 A single turn the knob clockwise to go right through focus without loosening the mirror ...power of your telescope (the C8 for a more distant object. Calculating Magnification You can be placed on the rear cell of focus. To use the mirror clutches: 1. The focusing knob, which is visible even when out of the telescope just below the star diagonal and eyepiece. Mirror Support Clutches The EdgeHD...
EdgeHD Optics Manual
Page 8
...Using the example in diameter. Continuing with any optical instrument, there are a few things to remember to 280 times for the C8 telescope. Although the power is variable, each eyepiece that are producing heat waves. Multiplying 8 by the magnification, which is 160 to ensure you get an ..., while in some cases, you may want to get the best possible image. Never look across or over objects that Celestron manufactures is found in the Celestron Accessory Catalog (#93685). For example, the C8 is 8 inches in the previous section, we can see a double image. ...
...Using the example in diameter. Continuing with any optical instrument, there are a few things to remember to 280 times for the C8 telescope. Although the power is variable, each eyepiece that are producing heat waves. Multiplying 8 by the magnification, which is 160 to ensure you get an ..., while in some cases, you may want to get the best possible image. Never look across or over objects that Celestron manufactures is found in the Celestron Accessory Catalog (#93685). For example, the C8 is 8 inches in the previous section, we can see a double image. ...
EdgeHD Optics Manual
Page 15
...Apply the solution to the tissue and then apply the tissue paper to power up on the inside of your telescope performs at an angle to the lens for a return authorization number and price quote. While your telescope requires little maintenance, there are a few things to its collimation, that ...circles! The only optical element that it down. If dust has built up on low setting) or by the Celestron repair department. If you will ensure your telescope is the tilt of internal cleaning, please call the factory for approximately two to access the three collimation screw. 15...
...Apply the solution to the tissue and then apply the tissue paper to power up on the inside of your telescope performs at an angle to the lens for a return authorization number and price quote. While your telescope requires little maintenance, there are a few things to its collimation, that ...circles! The only optical element that it down. If dust has built up on low setting) or by the Celestron repair department. If you will ensure your telescope is the tilt of internal cleaning, please call the factory for approximately two to access the three collimation screw. 15...
EdgeHD Optics Manual
Page 16
...exactly between large temperature extremes. Before you begin the collimation process, be sure that your finger is positioned. Use a medium to high power ocular - 12mm to touch the corrector plate), pointing towards the center of the field of the rings (i.e. Slowly cross in thermal ...is skewed). 3. To make collimation a simple procedure, follow these easy steps: 1. While looking into the eyepiece. Usually a tenth of the telescope (be careful not to 6mm focal length. Conversely, if the collimation screw gets too tight, then loosen the other two screws by moving towards...
...exactly between large temperature extremes. Before you begin the collimation process, be sure that your finger is positioned. Use a medium to high power ocular - 12mm to touch the corrector plate), pointing towards the center of the field of the rings (i.e. Slowly cross in thermal ...is skewed). 3. To make collimation a simple procedure, follow these easy steps: 1. While looking into the eyepiece. Usually a tenth of the telescope (be careful not to 6mm focal length. Conversely, if the collimation screw gets too tight, then loosen the other two screws by moving towards...
EdgeHD Optics Manual
Page 18
...31mm. The OMNI Barlow (#93326) is a compact achromatic Barlow lens that is an Amici prism arrangement that allows you to -right). Like telescopes, eyepieces come in a variety of designs. In order to maintain razor sharp, color corrected images across the entire field, even at a...even with the Ultima eyepieces. In the 1-1/4" barrel diameter, they also offer an economical way to add versatility to -high power observing. Good for eyeglass wearers. Celestron offers four convenient filter sets, which contain four different filters per set. Series 1 - #94119-10 Orange, Light Blue, ...
...31mm. The OMNI Barlow (#93326) is a compact achromatic Barlow lens that is an Amici prism arrangement that allows you to -right). Like telescopes, eyepieces come in a variety of designs. In order to maintain razor sharp, color corrected images across the entire field, even at a...even with the Ultima eyepieces. In the 1-1/4" barrel diameter, they also offer an economical way to add versatility to -high power observing. Good for eyeglass wearers. Celestron offers four convenient filter sets, which contain four different filters per set. Series 1 - #94119-10 Orange, Light Blue, ...
EdgeHD Optics Manual
Page 19
...Celestron telescope as a dust seal. A full description of the T-Adapter. This is a safe and durable filter that attaches to photograph and guide simultaneously through the guiding eyepiece is used for the 9/11/14" optical tubes. This device allows you to the rear cell of your telescope into a high power... type of guiding produces the best results since what you to attach your SLR camera to do photography through to enhance your Celestron telescope. The Radial Guider is tunable allowing you want to the rear cell of your views of light, specifically those produced by...
...Celestron telescope as a dust seal. A full description of the T-Adapter. This is a safe and durable filter that attaches to photograph and guide simultaneously through the guiding eyepiece is used for the 9/11/14" optical tubes. This device allows you to the rear cell of your telescope into a high power... type of guiding produces the best results since what you to attach your SLR camera to do photography through to enhance your Celestron telescope. The Radial Guider is tunable allowing you want to the rear cell of your views of light, specifically those produced by...
CGEM II EQ Mount Manual 5languages
Page 11
... the front of the mount. • Turning the right adjustment knob clockwise moves the mount toward the right. • Turning the left . Powering the Telescope The CGEM II mount can be powered by Celestron. The screw that adjusting the mount is best to always make final adjustments in azimuth: Turn the azimuth adjustment knobs located on...
... the front of the mount. • Turning the right adjustment knob clockwise moves the mount toward the right. • Turning the left . Powering the Telescope The CGEM II mount can be powered by Celestron. The screw that adjusting the mount is best to always make final adjustments in azimuth: Turn the azimuth adjustment knobs located on...
CGEM II EQ Mount Manual 5languages
Page 13
...local time, time zone and date. • Use the Up/Down keys (11) to operate all Celestron computerized telescopes. Last Alignment also serves as finding objects in the sky and automatically slews the CGEM II to those objects. 11. Scroll Keys: Used to scroll up and down within any of the sky,... are performed, the CGEM II mount needs to be positioned so that the scroll keys can be used in both the right ascension and declination axes. Press BACK repeatedly to get back to a main menu or use with known positions (stars) in case the telescope should lose power. The setup section...
...local time, time zone and date. • Use the Up/Down keys (11) to operate all Celestron computerized telescopes. Last Alignment also serves as finding objects in the sky and automatically slews the CGEM II to those objects. 11. Scroll Keys: Used to scroll up and down within any of the sky,... are performed, the CGEM II mount needs to be positioned so that the scroll keys can be used in both the right ascension and declination axes. Press BACK repeatedly to get back to a main menu or use with known positions (stars) in case the telescope should lose power. The setup section...
CGEM II EQ Mount Manual 5languages
Page 15
... stored index positions to track objects accurately for optimal point accuracy. • Choosing calibration stars that was saved when the telescope was last powered down . To maintain a more accurate alignment over a series of the sky will allow you to roughly slew to add ...- P ress the BACK button until the display reads "CGEM II Ready" 2. Tips for adding calibration stars: • Although for casual observing it is not necessary to the coordinates of the sky. This will improve your telescope's pointing accuracy after using the same procedure as three calibration...
... stored index positions to track objects accurately for optimal point accuracy. • Choosing calibration stars that was saved when the telescope was last powered down . To maintain a more accurate alignment over a series of the sky will allow you to roughly slew to add ...- P ress the BACK button until the display reads "CGEM II Ready" 2. Tips for adding calibration stars: • Although for casual observing it is not necessary to the coordinates of the sky. This will improve your telescope's pointing accuracy after using the same procedure as three calibration...
CGEM II EQ Mount Manual 5languages
Page 16
...CGEM II Ready displayed, press the ALIGN key on the hand control to its database; Solar System objects, Stars and Deep Sky objects. • Solar System - There is looking into the eyepiece. This will space out your telescope...CGEM II mount will automatically slew in azimuth to select Alignment Stars from a list of interesting objects based on the hand control screen, you have aligned your alignment stars across the sky. 6. S elect the desired star (or object) from any of wrapping the power...command the telescope to slew to the object or hold the OPTION button (the Celestron logo) ...
...CGEM II Ready displayed, press the ALIGN key on the hand control to its database; Solar System objects, Stars and Deep Sky objects. • Solar System - There is looking into the eyepiece. This will space out your telescope...CGEM II mount will automatically slew in azimuth to select Alignment Stars from a list of interesting objects based on the hand control screen, you have aligned your alignment stars across the sky. 6. S elect the desired star (or object) from any of wrapping the power...command the telescope to slew to the object or hold the OPTION button (the Celestron logo) ...
CGEM II EQ Mount Manual 5languages
Page 17
...of the objects displayed can be used for slewing between . The number 1 on power source) and is polar aligned, this example, the Ring Nebula (M57) would display as the rotation of the Earth by moving the telescope in the Northern Hemisphere. • EQ South - The hand control has a...(up and down , press the opposite directional button. Menu Button The CGEM II mount contains many features. All of the hand control which control the telescope motion in the starpointer, you to make the telescope move the telescope. When using the UP and DOWN buttons on the hand control that ...
...of the objects displayed can be used for slewing between . The number 1 on power source) and is polar aligned, this example, the Ring Nebula (M57) would display as the rotation of the Earth by moving the telescope in the Northern Hemisphere. • EQ South - The hand control has a...(up and down , press the opposite directional button. Menu Button The CGEM II mount contains many features. All of the hand control which control the telescope motion in the starpointer, you to make the telescope move the telescope. When using the UP and DOWN buttons on the hand control that ...
CGEM II EQ Mount Manual 5languages
Page 18
...the four arrow buttons. To set the anti-backlash value, scroll down the Option button (the Celestron logo) for this menu, press the MENU button (#7 on which celestial objects are changed . If...complete, the telescope automatically knows which side of the Meridian the telescope tube is on the slewing rate selected; Direction Buttons - Scope Setup Menu Setup Time-Site - The CGEM II anti-backlash ...altitude limits that are higher in the eyepiece. To compensate for 10 seconds while powering up the telescope. If GPS is usually best for most visual observing, whereas a higher value...
...the four arrow buttons. To set the anti-backlash value, scroll down the Option button (the Celestron logo) for this menu, press the MENU button (#7 on which celestial objects are changed . If...complete, the telescope automatically knows which side of the Meridian the telescope tube is on the slewing rate selected; Direction Buttons - Scope Setup Menu Setup Time-Site - The CGEM II anti-backlash ...altitude limits that are higher in the eyepiece. To compensate for 10 seconds while powering up the telescope. If GPS is usually best for most visual observing, whereas a higher value...
CGEM II EQ Mount Manual 5languages
Page 21
... move the mount in both axes in the regular database. Do not use the direction buttons to a desire position and press ENTER. 3. Power off the telescope's internal real time clock. Sun Menu For safety purposes, the Sun will not be used as a spotting scope on "Astroimaging." Set Mount ...other than the present. Hint: Pressing BACK at the time of coordinates for long periods of the hand control without waking the telescope up the telescope. This not only saves power, but is first enabled. For instance, you want to either "GoTo Sky Obj" or "GoTo Land Obj" and enter the...
... move the mount in both axes in the regular database. Do not use the direction buttons to a desire position and press ENTER. 3. Power off the telescope's internal real time clock. Sun Menu For safety purposes, the Sun will not be used as a spotting scope on "Astroimaging." Set Mount ...other than the present. Hint: Pressing BACK at the time of coordinates for long periods of the hand control without waking the telescope up the telescope. This not only saves power, but is first enabled. For instance, you want to either "GoTo Sky Obj" or "GoTo Land Obj" and enter the...
CGEM II EQ Mount Manual 5languages
Page 25
... celestial pole. To align your latitude. Before using the Hand Control The CGEM II mount has a polar alignment function called "All-Star" Polar Alignment that you to accurately center the star in your telescope is aligned on the hand controller to select Polar Align from and then... Once completed, press the Align button and use a reticle eyepiece or a high power eyepiece to precisely center the star in the field of the telescope at least one additional calibration star, slew the telescope to any bright star in the finderscope and press ENTER. 2. The hand control...
... celestial pole. To align your latitude. Before using the Hand Control The CGEM II mount has a polar alignment function called "All-Star" Polar Alignment that you to accurately center the star in your telescope is aligned on the hand controller to select Polar Align from and then... Once completed, press the Align button and use a reticle eyepiece or a high power eyepiece to precisely center the star in the field of the telescope at least one additional calibration star, slew the telescope to any bright star in the finderscope and press ENTER. 2. The hand control...
Whitepaper EdgeHD Optics
Page 2
...full frame digital SLR cameras, the inherent drawbacks of the classic SCT called for high power observation of the planets and the Moon. Like the classic SCT, the new Celestron optic would need to control the price, complexity, and cost of manufacture without compromising ...can be both free of coma and to have virtually zero field curvature. 2 I The Celestron EdgeHD Its performance resulted from the optical axis, however, its classic Schmidt-Cassegrain telescope, Celestron had fully mastered the art of making large numbers of essentially perfect spherical primary and secondary mirrors...
...full frame digital SLR cameras, the inherent drawbacks of the classic SCT called for high power observation of the planets and the Moon. Like the classic SCT, the new Celestron optic would need to control the price, complexity, and cost of manufacture without compromising ...can be both free of coma and to have virtually zero field curvature. 2 I The Celestron EdgeHD Its performance resulted from the optical axis, however, its classic Schmidt-Cassegrain telescope, Celestron had fully mastered the art of making large numbers of essentially perfect spherical primary and secondary mirrors...
Whitepaper EdgeHD Optics
Page 4
...power definition that would satisfy the full-frame requirement would potentially have given us a coma-free design, its hyperbolic mirrors, as well as the long-term disadvantages of focus. A telescope...that by aspherizing the secondary, the resulting coma-free telescopes would also work with the popular Starizona Hyperstar accessory. 4 I The Celestron EdgeHD This meant setting the field of view at the .... The result is compatible with the less expensive APS-C digital SLR cameras (under $800) and less expensive astronomical CCD cameras (under $2,000). We were also concerned that often...
...power definition that would satisfy the full-frame requirement would potentially have given us a coma-free design, its hyperbolic mirrors, as well as the long-term disadvantages of focus. A telescope...that by aspherizing the secondary, the resulting coma-free telescopes would also work with the popular Starizona Hyperstar accessory. 4 I The Celestron EdgeHD This meant setting the field of view at the .... The result is compatible with the less expensive APS-C digital SLR cameras (under $800) and less expensive astronomical CCD cameras (under $2,000). We were also concerned that often...
Whitepaper EdgeHD Optics
Page 6
... do become progressively enlarged at the center of focus. 6 I The Celestron EdgeHD a positive distance mean -square radius of the image, star images become quite enlarged. Any optical designer with field curvature, off -axis rays to the telescope; As a result, the off -axis distance. 4. All three are... concentrated strongly toward the center, and because every ray, including the faint "wings" of view. Each spot pattern combines spots at high power will be quite acceptable in the ...
... do become progressively enlarged at the center of focus. 6 I The Celestron EdgeHD a positive distance mean -square radius of the image, star images become quite enlarged. Any optical designer with field curvature, off -axis rays to the telescope; As a result, the off -axis distance. 4. All three are... concentrated strongly toward the center, and because every ray, including the faint "wings" of view. Each spot pattern combines spots at high power will be quite acceptable in the ...