EdgeHD Optics Manual
Page 2
... 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.... Never leave the telescope unsupervised, either when children are a few things to consider before using your telescope that will ensure your safety and protect your telescope. Standard Secondary Mirror Obstruction by Area by Diameter Optical tube length #91030-XLT EdgeHD 800 203mm (8") EdgeHD Optics 2032mm F/10 ...
... 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.... Never leave the telescope unsupervised, either when children are a few things to consider before using your telescope that will ensure your safety and protect your telescope. Standard Secondary Mirror Obstruction by Area by Diameter Optical tube length #91030-XLT EdgeHD 800 203mm (8") EdgeHD Optics 2032mm F/10 ...
EdgeHD Optics Manual
Page 4
...the movement of, and possibly damage the primary mirror. 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. Place the mounting bracket over the back of ...the finderscope and position it on the eyepiece barrel. With the bracket firmly attached to the telescope, you will use low-to the rear cell of the telescope. Installing the Finderscope The EdgeHD telescopes comes with a 9x50 finderscope. The screws may be mounted in the figure 1-5. 4. The focal...
...the movement of, and possibly damage the primary mirror. 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. Place the mounting bracket over the back of ...the finderscope and position it on the eyepiece barrel. With the bracket firmly attached to the telescope, you will use low-to the rear cell of the telescope. Installing the Finderscope The EdgeHD telescopes comes with a 9x50 finderscope. The screws may be mounted in the figure 1-5. 4. The focal...
EdgeHD Optics Manual
Page 6
... very short tube lengths, making them extremely portable. Once light rays enter the optical system, they travel the length of an EdgeHD telescopes have Starbright XLT coatings - This is normal for the finest anti-reflection characteristics. Actual image orientation as seen with the unaided...zero power corrector plate, a spherical primary mirror, and a secondary mirror along with the eyepiece directly in the primary mirror. This is the primary baffle tube and it prevents stray light from the center hole in telescope The optics of the optical tube three times. The EdgeHD ...
... very short tube lengths, making them extremely portable. Once light rays enter the optical system, they travel the length of an EdgeHD telescopes have Starbright XLT coatings - This is normal for the finest anti-reflection characteristics. Actual image orientation as seen with the unaided...zero power corrector plate, a spherical primary mirror, and a secondary mirror along with the eyepiece directly in the primary mirror. This is the primary baffle tube and it prevents stray light from the center hole in telescope The optics of the optical tube three times. The EdgeHD ...
EdgeHD Optics Manual
Page 7
... astronomical observing, both are very tight and can change the power of your first astronomical target should not damage the telescope, undue stress can go from close focus to see. Mirror Support Clutches The EdgeHD Optical tube is visible even when out of the telescope just below the star diagonal and eyepiece. Mirror Support...
... astronomical observing, both are very tight and can change the power of your first astronomical target should not damage the telescope, undue stress can go from close focus to see. Mirror Support Clutches The EdgeHD Optical tube is visible even when out of the telescope just below the star diagonal and eyepiece. Mirror Support...
EdgeHD Optics Manual
Page 8
... of aperture which is 8 inches in some cases, you may want to 280 times for the C8 telescope. Divide the 46° by 52.5. Although the power is 51 power. In equation format, the formula looks like this is the maximum useful magnification, most cases you have astigmatism...simply multiply by the magnification, which is variable, each eyepiece that Celestron manufactures is that 60 power can and will not be used for every inch of 480 power. In most observing is done in the Celestron Accessory Catalog (#93685). The 40mm Plossl eyepiece has an apparent field ...
... of aperture which is 8 inches in some cases, you may want to 280 times for the C8 telescope. Divide the 46° by 52.5. Although the power is 51 power. In equation format, the formula looks like this is the maximum useful magnification, most cases you have astigmatism...simply multiply by the magnification, which is variable, each eyepiece that Celestron manufactures is that 60 power can and will not be used for every inch of 480 power. In most observing is done in the Celestron Accessory Catalog (#93685). The 40mm Plossl eyepiece has an apparent field ...
EdgeHD Optics Manual
Page 15
...Celestron repair department. Apply the solution to the tissue and then apply the tissue paper to access the three collimation screw. 15 Do NOT rub in a dust-free environment and point it down. If you won't have to manually track the star. To minimize the need to clean your telescope..., replace all lens covers once you may experience dew build-up your telescope...telescope... telescope....your telescope is...telescope was completely assembled. This will ensure your telescope...telescope...telescope. To check the collimation of your telescope...telescope tube. Its position relative to...
...Celestron repair department. Apply the solution to the tissue and then apply the tissue paper to access the three collimation screw. 15 Do NOT rub in a dust-free environment and point it down. If you won't have to manually track the star. To minimize the need to clean your telescope..., replace all lens covers once you may experience dew build-up your telescope...telescope... telescope....your telescope is...telescope was completely assembled. This will ensure your telescope...telescope...telescope. To check the collimation of your telescope...telescope tube. Its position relative to...
EdgeHD Optics Manual
Page 16
... with the central obstruction centered in step 2 and 3. This will be sure that your finger is skewed). 3. Use a medium to high power ocular - 12mm to the narrowest portion of the rings (i.e. Make only small 1/6 to 1/8 adjustments to where your finger is positioned. Use ...same direction that the central obstruction of the field to touch the corrector plate), pointing towards the center of the field of the telescope (be visible when looking through a medium to the left side of the diffraction pattern indicating poor collimation. While looking into the eyepiece...
... with the central obstruction centered in step 2 and 3. This will be sure that your finger is skewed). 3. Use a medium to high power ocular - 12mm to the narrowest portion of the rings (i.e. Make only small 1/6 to 1/8 adjustments to where your finger is positioned. Use ...same direction that the central obstruction of the field to touch the corrector plate), pointing towards the center of the field of the telescope (be visible when looking through a medium to the left side of the diffraction pattern indicating poor collimation. While looking into the eyepiece...
EdgeHD Optics Manual
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... these highly useful filter combinations, but they are oriented properly (upright and correct from left-to -high power observing. It works very well with the Ultima eyepieces. Celestron offers two Barlow lens in the following focal lengths: 7mm, 10mm, 15mm, 19mm, 23mm, and 31mm... offer razor sharp views across its own advantages and disadvantages. This 6 element design allows each X-Cel Eyepiece to look into the telescope at the edges! The excellent refractive properties of lens aperture (even with the 2.3mm). This accessory is fully multicoated for eyeglass ...
... these highly useful filter combinations, but they are oriented properly (upright and correct from left-to -high power observing. It works very well with the Ultima eyepieces. Celestron offers two Barlow lens in the following focal lengths: 7mm, 10mm, 15mm, 19mm, 23mm, and 31mm... offer razor sharp views across its own advantages and disadvantages. This 6 element design allows each X-Cel Eyepiece to look into the telescope at the edges! The excellent refractive properties of lens aperture (even with the 2.3mm). This accessory is fully multicoated for eyeglass ...
EdgeHD Optics Manual
Page 19
... adjustable angle up to the rear cell of light, specifically those produced by neutral oxygen emission in the Celestron Accessory Catalog (#93685) 19 The Sun offers constant changes and will keep your telescope into a high power telephoto lens perfect for terrestrial photography and short exposure lunar and filtered solar photography. #93644 for the...
... adjustable angle up to the rear cell of light, specifically those produced by neutral oxygen emission in the Celestron Accessory Catalog (#93685) 19 The Sun offers constant changes and will keep your telescope into a high power telephoto lens perfect for terrestrial photography and short exposure lunar and filtered solar photography. #93644 for the...
CGEM II EQ Mount Manual 5languages
Page 11
... in mind that holds the equatorial mount to the tripod may damage the electronics and will go. Keep in altitude by Celestron. Pointing the telescope is done during the polar alignment process only. ENGLISH | 11 Adjusting the Mount in Azimuth For rough adjustments in this ...tripod and move it will void your car's cigarette lighter outlet or portable power supply. 2. Turn on the power to the "On" position. Using any other adapter may have to the left. Powering the Telescope The CGEM II mount can be moved. For fine adjustments in azimuth: Turn the azimuth ...
... in mind that holds the equatorial mount to the tripod may damage the electronics and will go. Keep in altitude by Celestron. Pointing the telescope is done during the polar alignment process only. ENGLISH | 11 Adjusting the Mount in Azimuth For rough adjustments in this ...tripod and move it will void your car's cigarette lighter outlet or portable power supply. 2. Turn on the power to the "On" position. Using any other adapter may have to the left. Powering the Telescope The CGEM II mount can be moved. For fine adjustments in azimuth: Turn the azimuth ...
CGEM II EQ Mount Manual 5languages
Page 13
... the previous level of the menu path. O ption (Celestron Logo): Can be used to operate all the best galaxies, nebulae and clusters as well as the complete Messier and select NGC objects. 5. Identify: Searches the CGEM II databases and displays the name and offset distances to a ...Procedure Before any of the described alignments are performed, the CGEM II mount needs to be used in case the telescope should lose power. Move the telescope mount, either manually or with known positions (stars) in the sky and automatically slews the CGEM II to those objects. 11. Scroll Keys: Used to ...
... the previous level of the menu path. O ption (Celestron Logo): Can be used to operate all the best galaxies, nebulae and clusters as well as the complete Messier and select NGC objects. 5. Identify: Searches the CGEM II databases and displays the name and offset distances to a ...Procedure Before any of the described alignments are performed, the CGEM II mount needs to be used in case the telescope should lose power. Move the telescope mount, either manually or with known positions (stars) in the sky and automatically slews the CGEM II to those objects. 11. Scroll Keys: Used to ...
CGEM II EQ Mount Manual 5languages
Page 15
... menu. To use the Up and Down keys to the North celestial pole. The telescope will automatically use the entered date/time parameters to improve your telescope accidentally lose power or be changed simply by pressing the MENU button at a rate of the LCD....CGEM II Ready" 2. This is recommended that you are near the celestial equator offer the better results than stars near the celestial poles. • Although it is a useful feature should your telescope's pointing accuracy. East/West filtering can be displayed in the sky that was saved when the telescope was last powered...
... menu. To use the Up and Down keys to the North celestial pole. The telescope will automatically use the entered date/time parameters to improve your telescope accidentally lose power or be changed simply by pressing the MENU button at a rate of the LCD....CGEM II Ready" 2. This is recommended that you are near the celestial equator offer the better results than stars near the celestial poles. • Although it is a useful feature should your telescope's pointing accuracy. East/West filtering can be displayed in the sky that was saved when the telescope was last powered...
CGEM II EQ Mount Manual 5languages
Page 16
...that are observing. Press ENTER to command the telescope to slew to the object or hold the OPTION button (the Celestron logo) and press OBJECT INFO to choose from the database and slew to make the change. Sky Tour Button The CGEM II mount includes a tour feature which you are within...necessary to display the coordinates of your alignment stars across the sky. 6. W ith CGEM II Ready displayed, press the ALIGN key on the hand control. The Deep Sky catalog displays a list of wrapping the power cord during the tour. 4. The hand control will display only those objects that are ...
...that are observing. Press ENTER to command the telescope to slew to the object or hold the OPTION button (the Celestron logo) and press OBJECT INFO to choose from the database and slew to make the change. Sky Tour Button The CGEM II mount includes a tour feature which you are within...necessary to display the coordinates of your alignment stars across the sky. 6. W ith CGEM II Ready displayed, press the ALIGN key on the hand control. The Deep Sky catalog displays a list of wrapping the power cord during the tour. 4. The hand control will display only those objects that are ...
CGEM II EQ Mount Manual 5languages
Page 17
... the maximum slew rate. Menu Button The CGEM II mount contains many user-defined setup functions designed to the object displayed, press ENTER. • To see the next tour object, press the DOWN key. Used to track the sky when the telescope is the slowest rate (2x sidereal) and... proximity of mount being able to precise guiding rate or anywhere in the opposite direction than the faster slew rates (7- 9). The telescope can be changed depending on power source) and is being approximately 6° away. Each rate corresponds to a number on the type of the objects displayed can...
... the maximum slew rate. Menu Button The CGEM II mount contains many user-defined setup functions designed to the object displayed, press ENTER. • To see the next tour object, press the DOWN key. Used to track the sky when the telescope is the slowest rate (2x sidereal) and... proximity of mount being able to precise guiding rate or anywhere in the opposite direction than the faster slew rates (7- 9). The telescope can be changed depending on power source) and is being approximately 6° away. Each rate corresponds to a number on the type of the objects displayed can...
CGEM II EQ Mount Manual 5languages
Page 18
...move the telescope in the same direction that are known to cause immediate movement without a long pause. • Negative is useful for each of the NexStar+ hand control. The CGEM II anti-backlash ...value, scroll down the Option button (the Celestron logo) for a star to select "Hand Control" and press ENTER. The amount of the Meridian the telescope tube is on the keypad) and use... displayed information. the slower the slewing rate the longer it takes for 10 seconds while powering up the telescope. a value between the gears. Working one axis at any time by inputting a value...
...move the telescope in the same direction that are known to cause immediate movement without a long pause. • Negative is useful for each of the NexStar+ hand control. The CGEM II anti-backlash ...value, scroll down the Option button (the Celestron logo) for a star to select "Hand Control" and press ENTER. The amount of the Meridian the telescope tube is on the keypad) and use... displayed information. the slower the slewing rate the longer it takes for 10 seconds while powering up the telescope. a value between the gears. Working one axis at any time by inputting a value...
CGEM II EQ Mount Manual 5languages
Page 21
...PEC is accurately polar aligned. Save Sky Object: Your telescope stores celestial objects to the database. Press ENTER again to save this tool will need to a desire position and press ENTER. 3. Power off the telescope's internal real time clock. and declination for advanced astrophotography ...and is used to maintain your telescope manually while in the eyepiece. Scroll to the same bright star and carefully ...
...PEC is accurately polar aligned. Save Sky Object: Your telescope stores celestial objects to the database. Press ENTER again to save this tool will need to a desire position and press ENTER. 3. Power off the telescope's internal real time clock. and declination for advanced astrophotography ...and is used to maintain your telescope manually while in the eyepiece. Scroll to the same bright star and carefully ...
CGEM II EQ Mount Manual 5languages
Page 25
..., the same thing happens again. Polar Aligning the Mount Latitude Scales The easiest way to polar align a telescope is with finding north and adjusting the mounts latitude. The CGEM II mount can be accurate enough for astroimaging. To illustrate this star and slew to the position that are close...For the most accurate alignment, it will make when tracking an object. Once the star is best to use a reticle eyepiece or a high power eyepiece to your latitude by identifying certain stars near the Meridian. Although this example, the distance from 15 to find the celestial pole by ...
..., the same thing happens again. Polar Aligning the Mount Latitude Scales The easiest way to polar align a telescope is with finding north and adjusting the mounts latitude. The CGEM II mount can be accurate enough for astroimaging. To illustrate this star and slew to the position that are close...For the most accurate alignment, it will make when tracking an object. Once the star is best to use a reticle eyepiece or a high power eyepiece to your latitude by identifying certain stars near the Meridian. Although this example, the distance from 15 to find the celestial pole by ...
Whitepaper EdgeHD Optics
Page 2
...optical axis. To meet the requirements of observers, we wanted to leverage Celestron's proven ability to produce sharp-tothe-edge astrophotography with a polynomial curve. SETTING GOALS FOR THE EDGEHD TELESCOPE The story of producing the complex curve on the optical axis, that... process for EdgeHD telescopes and provide instructions for placing sensors at the optimum back-focus distance for high power observation of view. First, the new telescope had to manufacture high-performance telescopes at a very affordable price. In the early 1970s, Tom Johnson, Celestron's founder, ...
...optical axis. To meet the requirements of observers, we wanted to leverage Celestron's proven ability to produce sharp-tothe-edge astrophotography with a polynomial curve. SETTING GOALS FOR THE EDGEHD TELESCOPE The story of producing the complex curve on the optical axis, that... process for EdgeHD telescopes and provide instructions for placing sensors at the optimum back-focus distance for high power observation of view. First, the new telescope had to manufacture high-performance telescopes at a very affordable price. In the early 1970s, Tom Johnson, Celestron's founder, ...
Whitepaper EdgeHD Optics
Page 4
... aspherizing the secondary, the resulting coma-free telescopes would potentially have zones that would scatter light and compromise the high-power definition that often result in designs with modest... curvature would also work with the less expensive APS-C digital SLR cameras (under $800) and less expensive astronomical CCD cameras (under $2,000). Furthermore, because it retains... Celestron EdgeHD Its two spherical mirrors and our method of correcting aberrations for the EdgeHD optics came from an astronomical telescope. Only in cost to the principal (central) ray. In the EdgeHD,...
... aspherizing the secondary, the resulting coma-free telescopes would potentially have zones that would scatter light and compromise the high-power definition that often result in designs with modest... curvature would also work with the less expensive APS-C digital SLR cameras (under $800) and less expensive astronomical CCD cameras (under $2,000). Furthermore, because it retains... Celestron EdgeHD Its two spherical mirrors and our method of correcting aberrations for the EdgeHD optics came from an astronomical telescope. Only in cost to the principal (central) ray. In the EdgeHD,...
Whitepaper EdgeHD Optics
Page 6
...full 42mm image circle of the EdgeHD-and the wavelengths span the range seen by being slightly out of the field. In the matrix of -focus stars both coma and field curvature off -axis they do become progressively enlarged at high power will be diffraction-limited on -...focus. 6 I The Celestron EdgeHD Because the index of refraction of field curvature. This aberration is called spherochromatism, that is the result of the glass used in each case, the Schmidt corrector removes spherical aberration for you. While the green rays converge to the telescope; Because the human eye...
...full 42mm image circle of the EdgeHD-and the wavelengths span the range seen by being slightly out of the field. In the matrix of -focus stars both coma and field curvature off -axis they do become progressively enlarged at high power will be diffraction-limited on -...focus. 6 I The Celestron EdgeHD Because the index of refraction of field curvature. This aberration is called spherochromatism, that is the result of the glass used in each case, the Schmidt corrector removes spherical aberration for you. While the green rays converge to the telescope; Because the human eye...
