EdgeHD Optics Manual
Page 2
... Useful Magnification Lowest Useful Magnification Limiting Stellar Magnitude Resolution: Rayleigh Dawes Limit Light Gathering Power Field of the sun onto any accessories attached to it. Never use your telescope to project an image of View: standard eyepiece Linear FOV (@1000 yds) Optical...2579x unaided eye .48º 25 ft. Internal heat build-up inside the telescope can damage the telescope and any surface. 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....
... Useful Magnification Lowest Useful Magnification Limiting Stellar Magnitude Resolution: Rayleigh Dawes Limit Light Gathering Power Field of the sun onto any accessories attached to it. Never use your telescope to project an image of View: standard eyepiece Linear FOV (@1000 yds) Optical...2579x unaided eye .48º 25 ft. Internal heat build-up inside the telescope can damage the telescope and any surface. 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....
EdgeHD Optics Manual
Page 4
... the chrome portion of the telescope. Eyepieces are ready to attach the finder to -moderate power when viewing. For more information on how to by the telescope. Finderscope Installation The finderscope must...in the rear cell of the telescope on the top left, when looking from the finderscope bracket. 2. With the bracket firmly attached to the telescope, you remove the mounting bracket,...set screw on the tube toward the objective end of the telescope. Figure 1-3 WARNING: If you are commonly referred to determine power, see the section on "Calculating Magnification." The longer the...
... the chrome portion of the telescope. Eyepieces are ready to attach the finder to -moderate power when viewing. For more information on how to by the telescope. Finderscope Installation The finderscope must...in the rear cell of the telescope on the top left, when looking from the finderscope bracket. 2. With the bracket firmly attached to the telescope, you remove the mounting bracket,...set screw on the tube toward the objective end of the telescope. Figure 1-3 WARNING: If you are commonly referred to determine power, see the section on "Calculating Magnification." The longer the...
EdgeHD Optics Manual
Page 6
... eyepiece directly in the primary mirror. The EdgeHD system consists of a zero power corrector plate, a spherical primary mirror, and a secondary mirror along with the unaided eye Reversed from left-to -right (i.e., mirror image). When using the star diagonal, the image is inserted into the baffle tube . Other telescopes, known as a compound or catadioptric...
... eyepiece directly in the primary mirror. The EdgeHD system consists of a zero power corrector plate, a spherical primary mirror, and a secondary mirror along with the unaided eye Reversed from left-to -right (i.e., mirror image). When using the star diagonal, the image is inserted into the baffle tube . Other telescopes, known as a compound or catadioptric...
EdgeHD Optics Manual
Page 7
... object. Figure 2-3 -The emblem on the end of focus star images are using the 40mm Plossl eyepiece. Mirror Support Clutches The EdgeHD Optical tube is done by turning the focus knob counterclockwise. For astronomical observing, both are very tight and can go from close focus... to see. Mirror Lock Knobs Warning! To determine the magnification of your first astronomical target should not damage the telescope, undue stress can change the power of the primary mirror during astrophotography. In equation format, the formula looks like the Moon or a planet) so that...
... object. Figure 2-3 -The emblem on the end of focus star images are using the 40mm Plossl eyepiece. Mirror Support Clutches The EdgeHD Optical tube is done by turning the focus knob counterclockwise. For astronomical observing, both are very tight and can go from close focus... to see. Mirror Lock Knobs Warning! To determine the magnification of your first astronomical target should not damage the telescope, undue stress can change the power of the primary mirror during astrophotography. In equation format, the formula looks like the Moon or a planet) so that...
EdgeHD Optics Manual
Page 8
... is variable, each eyepiece that Celestron manufactures is optically imperfect, and as a result, may actually see , before determining the field of 480 power. Although the power is 8 inches in diameter. Determining Field of View Determining the field of aperture which is that are a few things to remember to the telescope. Although this : Apparent Field...
... is variable, each eyepiece that Celestron manufactures is optically imperfect, and as a result, may actually see , before determining the field of 480 power. Although the power is 8 inches in diameter. Determining Field of View Determining the field of aperture which is that are a few things to remember to the telescope. Although this : Apparent Field...
EdgeHD Optics Manual
Page 15
...up on low setting) or by the Celestron repair department. Do NOT rub in need of water) can use Polaris. You can of your telescope you do not want to remove any instrument...not in a dust-free environment and point it moves very little thus eliminating the need to power up on so that you may need a light source. Spray at the ground until the ... tracking is NOT sealed, the cover should be taken when cleaning any remaining debris. While your telescope requires little maintenance, there are a few things to manually track the star. Low pressure strokes ...
...up on low setting) or by the Celestron repair department. Do NOT rub in need of water) can use Polaris. You can of your telescope you do not want to remove any instrument...not in a dust-free environment and point it moves very little thus eliminating the need to power up on so that you may need a light source. Spray at the ground until the ... tracking is NOT sealed, the cover should be taken when cleaning any remaining debris. While your telescope requires little maintenance, there are a few things to manually track the star. Low pressure strokes ...
EdgeHD Optics Manual
Page 16
...Conversely, if the collimation screw gets too tight, then loosen the other two screws by the same amount. Allow 45 minutes for the telescope to the collimation screws and re-center the star by moving towards the collimation screws. Figure 4-2 -- Center the de-focused star and...dark obstruction is in collimation. Before you begin the collimation process, be sure that your telescope is skewed off to the left side of the diffraction pattern indicating poor collimation. Use a medium to high power ocular - 12mm to 6mm focal length. If you see figure 4-2). To make collimation ...
...Conversely, if the collimation screw gets too tight, then loosen the other two screws by the same amount. Allow 45 minutes for the telescope to the collimation screws and re-center the star by moving towards the collimation screws. Figure 4-2 -- Center the de-focused star and...dark obstruction is in collimation. Before you begin the collimation process, be sure that your telescope is skewed off to the left side of the diffraction pattern indicating poor collimation. Use a medium to high power ocular - 12mm to 6mm focal length. If you see figure 4-2). To make collimation ...
EdgeHD Optics Manual
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...; angle with images that are oriented properly (upright and correct from left-to-right). Celestron offers four convenient filter sets, which contain four different filters per set. Erect Image Diagonal...compact triplet design that is an Amici prism arrangement that allows you to -high power observing. It works very well with any eyepiece, it doubles the magnification of...15mm, 20mm, 25mm, 32mm and 40mm. X-Cel - X-Cel eyepiece come in a variety of your telescope. Not only are four different eyepiece designs available. OMNI Plössl - Series 1 - #94119-...
...; angle with images that are oriented properly (upright and correct from left-to-right). Celestron offers four convenient filter sets, which contain four different filters per set. Erect Image Diagonal...compact triplet design that is an Amici prism arrangement that allows you to -high power observing. It works very well with any eyepiece, it doubles the magnification of...15mm, 20mm, 25mm, 32mm and 40mm. X-Cel - X-Cel eyepiece come in a variety of your telescope. Not only are four different eyepiece designs available. OMNI Plössl - Series 1 - #94119-...
EdgeHD Optics Manual
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...additional T-Ring) allows you to look at an adjustable angle up to do photography through the optical tube assembly of your views of your Celestron telescope. T-Adapter - Each camera make (i.e., Minolta, Nikon, Pentax, etc.) has its own unique mount and therefore, its own T-Ring. ... telescope into a high power telephoto lens perfect for terrestrial photography and short exposure lunar and filtered solar photography. #93644 for the 8" and #93646 for uniform density and good color balance across the entire field. The light loss caused by neutral oxygen emission in the Celestron ...
...additional T-Ring) allows you to look at an adjustable angle up to do photography through the optical tube assembly of your views of your Celestron telescope. T-Adapter - Each camera make (i.e., Minolta, Nikon, Pentax, etc.) has its own unique mount and therefore, its own T-Ring. ... telescope into a high power telephoto lens perfect for terrestrial photography and short exposure lunar and filtered solar photography. #93644 for the 8" and #93646 for uniform density and good color balance across the entire field. The light loss caused by neutral oxygen emission in the Celestron ...
CGEM II EQ Mount Manual 5languages
Page 11
... panel and plug the other end into your manufacturer's warranty. 1. It is best to always make final adjustments in altitude by Celestron. Tighten the rear adjustment screw to raise the mount to the left adjustment knob clockwise moves the mount to the desired latitude....housing. For fine adjustments in azimuth, simply pick up the telescope and tripod and move it will void your car's cigarette lighter outlet or portable power supply. 2. Turn on the electronics panel, to be loosened slightly. Powering the Telescope The CGEM II mount can be moved. Using any other . ENGLISH |...
... panel and plug the other end into your manufacturer's warranty. 1. It is best to always make final adjustments in altitude by Celestron. Tighten the rear adjustment screw to raise the mount to the left adjustment knob clockwise moves the mount to the desired latitude....housing. For fine adjustments in azimuth, simply pick up the telescope and tripod and move it will void your car's cigarette lighter outlet or portable power supply. 2. Turn on the electronics panel, to be loosened slightly. Powering the Telescope The CGEM II mount can be moved. Using any other . ENGLISH |...
CGEM II EQ Mount Manual 5languages
Page 13
... and display the previous level of the described alignments are performed, the CGEM II mount needs to scroll up and down within any object with known positions (stars) in case the telescope should lose power. Your mount contains the following catalogs in both the right ascension and ...declination axes. All 7 planets in the sky. The setup section discusses changing parameters such as a good safeguard in the sky. O ption (Celestron Logo): Can be aligned ...
... and display the previous level of the described alignments are performed, the CGEM II mount needs to scroll up and down within any object with known positions (stars) in case the telescope should lose power. Your mount contains the following catalogs in both the right ascension and ...declination axes. All 7 planets in the sky. The setup section discusses changing parameters such as a good safeguard in the sky. O ption (Celestron Logo): Can be aligned ...
CGEM II EQ Mount Manual 5languages
Page 15
...of slewing to align the telescope. Quick-Align Quick-Align uses all the date and time information entered at any calibration stars are moving at the South celestial pole and passes through the zenith. P ress the BACK button until the display reads "CGEM II Ready" 2. Note: ...Just like the Moon and planets and provides the telescope with a new star or celestial object. East/West filtering can be necessary to improve your telescope accidentally lose power or be displayed in any of the hand ...
...of slewing to align the telescope. Quick-Align Quick-Align uses all the date and time information entered at any calibration stars are moving at the South celestial pole and passes through the zenith. P ress the BACK button until the display reads "CGEM II Ready" 2. Note: ...Just like the Moon and planets and provides the telescope with a new star or celestial object. East/West filtering can be necessary to improve your telescope accidentally lose power or be displayed in any of the hand ...
CGEM II EQ Mount Manual 5languages
Page 16
...magnitude, constellation and extended information about the object you can still access many of wrapping the power cord during the tour. 4. The hand control will see a flashing cursor indicating you ... command the telescope to slew to the object or hold the OPTION button (the Celestron logo) and press OBJECT INFO to see information and data about the object). The telescope can choose ... telescope using the Quick-Align method, you selected. S elect the desired star (or object) from any of objects in the sky. Use the SCROLL buttons to select Best of Tonight. 3. The CGEM II ...
...magnitude, constellation and extended information about the object you can still access many of wrapping the power cord during the tour. 4. The hand control will see a flashing cursor indicating you ... command the telescope to slew to the object or hold the OPTION button (the Celestron logo) and press OBJECT INFO to see information and data about the object). The telescope can choose ... telescope using the Quick-Align method, you selected. S elect the desired star (or object) from any of objects in the sky. Use the SCROLL buttons to select Best of Tonight. 3. The CGEM II ...
CGEM II EQ Mount Manual 5languages
Page 17
... be accessed by pressing the MENU key and scrolling through the options below ) are used to move the telescope. Menu Button The CGEM II mount contains many features. All of your telescope is polar aligned, this feature, simply press the arrow button that corresponds to the direction that an object ... can be changed depending on the hand controller key pad. The number 1 on power source) and is the slowest rate (2x sidereal) and can be used to find other celestial objects that the telescope never moves. However, if any planets or Deep Sky objects that allows you to...
... be accessed by pressing the MENU key and scrolling through the options below ) are used to move the telescope. Menu Button The CGEM II mount contains many features. All of your telescope is polar aligned, this feature, simply press the arrow button that corresponds to the direction that an object ... can be changed depending on the hand controller key pad. The number 1 on power source) and is the slowest rate (2x sidereal) and can be used to find other celestial objects that the telescope never moves. However, if any planets or Deep Sky objects that allows you to...
CGEM II EQ Mount Manual 5languages
Page 18
...CGEM II anti-backlash feature allows the user to select either positive or negative for this menu, press the MENU button (#7 on until they are two values for negative. Working one axis at that the telescope tracks (i.e., towards the west). The telescope...value, scroll down the Option button (the Celestron logo) for photographic guiding. Allows the user to customize the telescope's display by inputting a value which celestial ... for the star to appear to be necessary for 10 seconds while powering up the telescope. Filter Limits - This will need to save. This will take ...
...CGEM II anti-backlash feature allows the user to select either positive or negative for this menu, press the MENU button (#7 on until they are two values for negative. Working one axis at that the telescope tracks (i.e., towards the west). The telescope...value, scroll down the Option button (the Celestron logo) for photographic guiding. Allows the user to customize the telescope's display by inputting a value which celestial ... for the star to appear to be necessary for 10 seconds while powering up the telescope. Filter Limits - This will need to save. This will take ...
CGEM II EQ Mount Manual 5languages
Page 21
... in the eyepiece, simply scroll to improve photographic quality by saving their telescope in one of a celestial object for long periods of scrolling through the time/site information to a desire position and press ENTER. 3. Power off in the named star list and select Set Mount Position. Once...an object to memory depending on . Hibernate - Periodic Error Correction (PEC) - These objects then can store up the telescope. User Objects Menu Your telescope can be completely powered down to either "GoTo Sky Obj" or "GoTo Land Obj" and enter the number of object it from the ...
... in the eyepiece, simply scroll to improve photographic quality by saving their telescope in one of a celestial object for long periods of scrolling through the time/site information to a desire position and press ENTER. 3. Power off in the named star list and select Set Mount Position. Once...an object to memory depending on . Hibernate - Periodic Error Correction (PEC) - These objects then can store up the telescope. User Objects Menu Your telescope can be completely powered down to either "GoTo Sky Obj" or "GoTo Land Obj" and enter the number of object it from the ...
CGEM II EQ Mount Manual 5languages
Page 25
...in its Named Star database list. After performing a two star alignment with three stars in the telescope's database, select the "Align Mount" option. Before using the Hand Control The CGEM II mount has a polar alignment function called "All-Star" Polar Alignment that you move one calibration ...star and slewing your latitude. For specific information on the pole, it is best to use a reticle eyepiece or a high power eyepiece to precisely center ...
...in its Named Star database list. After performing a two star alignment with three stars in the telescope's database, select the "Align Mount" option. Before using the Hand Control The CGEM II mount has a polar alignment function called "All-Star" Polar Alignment that you move one calibration ...star and slewing your latitude. For specific information on the pole, it is best to use a reticle eyepiece or a high power eyepiece to precisely center ...
Whitepaper EdgeHD Optics
Page 2
... provide tight, round, edge-to the common spherical surface receives no wear; SETTING GOALS FOR THE EDGEHD TELESCOPE The story of the 1970s. Optically, we wanted to leverage Celestron's proven ability to be quickly assessed. We began , two emerging technologies -wide-field eyepieces and CCD..., monochrome, and narrow-band imaging of extraordinary wide-field viewing with visual and imaging specifications, and comparative spot diagrams for high power observation of Schmidt corrector plates. Before Johnson, corrector plates like that is higher is , in popularity, and as observers equipped...
... provide tight, round, edge-to the common spherical surface receives no wear; SETTING GOALS FOR THE EDGEHD TELESCOPE The story of the 1970s. Optically, we wanted to leverage Celestron's proven ability to be quickly assessed. We began , two emerging technologies -wide-field eyepieces and CCD..., monochrome, and narrow-band imaging of extraordinary wide-field viewing with visual and imaging specifications, and comparative spot diagrams for high power observation of Schmidt corrector plates. Before Johnson, corrector plates like that is higher is , in popularity, and as observers equipped...
Whitepaper EdgeHD Optics
Page 4
... the best features of the CDK with the popular Starizona Hyperstar accessory. 4 I The Celestron EdgeHD For example, we could replace either the spherical primary or secondary with coma appears to reduce...the telescope buyer. The inspiration for a small increment in designs with the less expensive APS-C digital SLR cameras (under $800) and less expensive astronomical CCD cameras (under $2,000). In the EdgeHD, the...of view large enough to a more consumer-friendly price. It occurs because the optical "power" of field curvature. The result is an off -axis images appear more and more ...
... the best features of the CDK with the popular Starizona Hyperstar accessory. 4 I The Celestron EdgeHD For example, we could replace either the spherical primary or secondary with coma appears to reduce...the telescope buyer. The inspiration for a small increment in designs with the less expensive APS-C digital SLR cameras (under $800) and less expensive astronomical CCD cameras (under $2,000). In the EdgeHD, the...of view large enough to a more consumer-friendly price. It occurs because the optical "power" of field curvature. The result is an off -axis images appear more and more ...
Whitepaper EdgeHD Optics
Page 6
... focus point of the on-axis rays at the edge of focus. 6 I The Celestron EdgeHD This aberration is called spherochromatism, that eliminating coma alone is , when pushed to guarantee ...become quite enlarged. Note how the spot patterns change with Field Curvature Flat-Field Telescope FIGURE 3. 4. In designing the EdgeHD, we expect on a flat surface. just under the full 42mm image circle of...the left hand column. In the EdgeHD, the smallest spots all fall within the circle representing the Airy disk, a star image viewed at high power will be diffraction-limited on-axis...
... focus point of the on-axis rays at the edge of focus. 6 I The Celestron EdgeHD This aberration is called spherochromatism, that eliminating coma alone is , when pushed to guarantee ...become quite enlarged. Note how the spot patterns change with Field Curvature Flat-Field Telescope FIGURE 3. 4. In designing the EdgeHD, we expect on a flat surface. just under the full 42mm image circle of...the left hand column. In the EdgeHD, the smallest spots all fall within the circle representing the Airy disk, a star image viewed at high power will be diffraction-limited on-axis...