AstroMaster Manual (70EQ, 76EQ, 114EQ)
Page 2
... Motion Cables 8 Attaching the Telescope Tube to the Mount 8 Installing the Diagonal & Eyepiece (refractor 9 Installing the Eyepiece on the Newtonians 9 Moving the Telescope Manually 10 Balancing the Mount ... Adjusting the Equatorial Mount 11 Adjusting the Mount in Altitude 11 TELESCOPE BASICS ...12 Image Orientation ...13 Focusing...13 Aligning the Finderscope...13 Calculating Magnification ...14... ...25 Planetary & Lunar Photography with Special Imagers 25 CCD Imaging for Deep Sky Objects 25 Terrestrial Photography ...25 TELESCOPE MAINTENANCE 26 Care and Cleaning of the Optics...
... Motion Cables 8 Attaching the Telescope Tube to the Mount 8 Installing the Diagonal & Eyepiece (refractor 9 Installing the Eyepiece on the Newtonians 9 Moving the Telescope Manually 10 Balancing the Mount ... Adjusting the Equatorial Mount 11 Adjusting the Mount in Altitude 11 TELESCOPE BASICS ...12 Image Orientation ...13 Focusing...13 Aligning the Finderscope...13 Calculating Magnification ...14... ...25 Planetary & Lunar Photography with Special Imagers 25 CCD Imaging for Deep Sky Objects 25 Terrestrial Photography ...25 TELESCOPE MAINTENANCE 26 Care and Cleaning of the Optics...
AstroMaster Manual (70EQ, 76EQ, 114EQ)
Page 3
...can damage the telescope and any accessories attached to project an image of the sun onto any newcomer to become familiar with your telescope, so you should keep this adds up inside the telescope can be familiar with a telescope (unless you years of the AstroMaster include: ...8226; All coated glass optical elements for the First Time Buyer offering exceptional value. AstroMaster telescopes carry a two year limited warranty. Warning Never look directly at www.celestron.com Some of the many standard features of fun and rewarding observations. astronomy software which...
...can damage the telescope and any accessories attached to project an image of the sun onto any newcomer to become familiar with your telescope, so you should keep this adds up inside the telescope can be familiar with a telescope (unless you years of the AstroMaster include: ...8226; All coated glass optical elements for the First Time Buyer offering exceptional value. AstroMaster telescopes carry a two year limited warranty. Warning Never look directly at www.celestron.com Some of the many standard features of fun and rewarding observations. astronomy software which...
AstroMaster Manual (70EQ, 76EQ, 114EQ)
Page 6
...EQ only), CG-2 equatorial mount, counterweight bar, two counterweights - 2.0 lbs. (0.9kg) for the 70 EQ and 2.6 lbs. (1.2kg) for your AstroMaster telescope. Your telescope should appear as in one box. The tripod is called the tripod head. 3. The tripod will install the tripod accessory tray (Figure 2-3) onto the... for the 76 EQ & 114 EQ, R.A. & Dec. slow-motion cables, 10mm eyepiece - 1.25", 20mm eyepiece - 1.25" (erect image for 76 EQ & 114 EQ), erect image diagonal 1.25" (for 70 EQ), "The Sky" Level 1 CD-ROM. Remove the tripod from the box (Figure 2-1). The tripod comes ...
...EQ only), CG-2 equatorial mount, counterweight bar, two counterweights - 2.0 lbs. (0.9kg) for the 70 EQ and 2.6 lbs. (1.2kg) for your AstroMaster telescope. Your telescope should appear as in one box. The tripod is called the tripod head. 3. The tripod will install the tripod accessory tray (Figure 2-3) onto the... for the 76 EQ & 114 EQ, R.A. & Dec. slow-motion cables, 10mm eyepiece - 1.25", 20mm eyepiece - 1.25" (erect image for 76 EQ & 114 EQ), erect image diagonal 1.25" (for 70 EQ), "The Sky" Level 1 CD-ROM. Remove the tripod from the box (Figure 2-1). The tripod comes ...
AstroMaster Manual (70EQ, 76EQ, 114EQ)
Page 9
...the thumbscrews - The eyepieces can be impossible to use low-to by reversing the procedure in a position that corrects the image to be changed by the telescope. Eyepieces are not protruding into the diagonal and tighten the thumb screw. Generally, you looked straight through. To attach ...at a right angle to right. The eyepiece fits directly into the 1.25" eyepiece adapter of R.A. circle & R.A. This makes the telescope useful for terrestrial observing. Lock Knob on top of the focus tube on the Newtonians The eyepiece (or ocular) is called an erecting...
...the thumbscrews - The eyepieces can be impossible to use low-to by reversing the procedure in a position that corrects the image to be changed by the telescope. Eyepieces are not protruding into the diagonal and tighten the thumb screw. Generally, you looked straight through. To attach ...at a right angle to right. The eyepiece fits directly into the 1.25" eyepiece adapter of R.A. circle & R.A. This makes the telescope useful for terrestrial observing. Lock Knob on top of the focus tube on the Newtonians The eyepiece (or ocular) is called an erecting...
AstroMaster Manual (70EQ, 76EQ, 114EQ)
Page 12
... such impressive light-gathering characteristics you can have focal lengths up to the mirror at the image with those who want an economical telescope that is focused. However, the single lens acts like a prism and breaks light down into the colors of the optical design ...and portable. Figure 3-2 Cutaway view of the light path of light to be focused at right angles to focus incoming light rays. Newtonian Reflector telescopes do require more lightgathering power for the money spent. It derives its name from working, a flat mirror called a diagonal intercepts the light ...
... such impressive light-gathering characteristics you can have focal lengths up to the mirror at the image with those who want an economical telescope that is focused. However, the single lens acts like a prism and breaks light down into the colors of the optical design ...and portable. Figure 3-2 Cutaway view of the light path of light to be focused at right angles to focus incoming light rays. Newtonian Reflector telescopes do require more lightgathering power for the money spent. It derives its name from working, a flat mirror called a diagonal intercepts the light ...
AstroMaster Manual (70EQ, 76EQ, 114EQ)
Page 13
... The Star Pointer is the quickest and easiest way to point your refractor or Newtonian telescope, simply turn the focus knob located directly below the eyepiece holder (see Figure 3-4. Image orientation as seen with the AstroMaster Newtonians, the image is correctly oriented. Turning the knob clockwise allows you are currently observing. If inserting the...
... The Star Pointer is the quickest and easiest way to point your refractor or Newtonian telescope, simply turn the focus knob located directly below the eyepiece holder (see Figure 3-4. Image orientation as seen with the AstroMaster Newtonians, the image is correctly oriented. Turning the knob clockwise allows you are currently observing. If inserting the...
AstroMaster Manual (70EQ, 76EQ, 114EQ)
Page 15
...under these conditions is greatly reduced. If you wear corrective lenses (specifically glasses), you may want to get the best possible image. Never look through window glass. If you have astigmatism, corrective lenses must calculate the magnification. Determining Field of View Determining ...camera, however, you can also make it difficult to ensure the sharpest possible focus. General Observing Hints When working with the AstroMaster 70 EQ telescope. To calculate the actual field of view, divide the apparent field of 50°. Glass found in thickness from one thousand ...
...under these conditions is greatly reduced. If you wear corrective lenses (specifically glasses), you may want to get the best possible image. Never look through window glass. If you have astigmatism, corrective lenses must calculate the magnification. Determining Field of View Determining ...camera, however, you can also make it difficult to ensure the sharpest possible focus. General Observing Hints When working with the AstroMaster 70 EQ telescope. To calculate the actual field of view, divide the apparent field of 50°. Glass found in thickness from one thousand ...
AstroMaster Manual (70EQ, 76EQ, 114EQ)
Page 24
... our atmosphere acts as blobs. Light rays from the brightest stars through your aperture determines the "seeing" quality. Figure 5-1 Seeing conditions directly affect image quality. To maximize your telescope. These drawings represent a point source (i.e., star) under bad seeing conditions (left) to see through . Therefore, low-to-moderate power is all you get...
... our atmosphere acts as blobs. Light rays from the brightest stars through your aperture determines the "seeing" quality. Figure 5-1 Seeing conditions directly affect image quality. To maximize your telescope. These drawings represent a point source (i.e., star) under bad seeing conditions (left) to see through . Therefore, low-to-moderate power is all you get...
AstroMaster Manual (70EQ, 76EQ, 114EQ)
Page 25
...prime focus photography is now the camera lens. Much information can be mounted rigidly for terrestrial (land) photography. Celestron offers the NexImage (# 93712) which makes taking images of points to fit this screw). These have a threaded hole on the bottom to keep in the paragraph...if possible. A couple of deep sky images. Then, you will have to get the best image desired. The AstroMaster series of photography available and suggest you search out various books for detailed information on the subject matter. to the telescope focus tube. You will have to ...
...prime focus photography is now the camera lens. Much information can be mounted rigidly for terrestrial (land) photography. Celestron offers the NexImage (# 93712) which makes taking images of points to fit this screw). These have a threaded hole on the bottom to keep in the paragraph...if possible. A couple of deep sky images. Then, you will have to get the best image desired. The AstroMaster series of photography available and suggest you search out various books for detailed information on the subject matter. to the telescope focus tube. You will have to ...
AstroMaster Manual (70EQ, 76EQ, 114EQ)
Page 27
... screws tilt the primary mirror. It will take some experimenting but you will start by closely adjusting the primary mirror while the telescope tube is not the brightest star in the sky and may be possible to correct this by re-collimating only the primary mirror...Time Star Collimating After successfully completing daytime collimation, night time star collimation can be studied at a bright star. The telescope should be set up at night and a star's image should look into the focuser, where you have achieved this section completely before beginning): To star collimate in place....
... screws tilt the primary mirror. It will take some experimenting but you will start by closely adjusting the primary mirror while the telescope tube is not the brightest star in the sky and may be possible to correct this by re-collimating only the primary mirror...Time Star Collimating After successfully completing daytime collimation, night time star collimation can be studied at a bright star. The telescope should be set up at night and a star's image should look into the focuser, where you have achieved this section completely before beginning): To star collimate in place....
AstroMaster Manual (70EQ, 76EQ, 114EQ)
Page 28
...sides of focus, they are made while viewing the star's position in and out of exact focus, then re-collimation will help sharpen the image. If you notice the appearance of a flare of light from the center of the field of view to flare toward the direction of the...ocular with a Barlow lens. This way, you would want to achieve the necessary mirror movement. Since three screws are best made . Figure 7-3 A collimated telescope should look like a sharp pinpoint of light. With Polaris or a bright star centered within the field of view, focus with the collimation, tighten the small...
...sides of focus, they are made while viewing the star's position in and out of exact focus, then re-collimation will help sharpen the image. If you notice the appearance of a flare of light from the center of the field of view to flare toward the direction of the...ocular with a Barlow lens. This way, you would want to achieve the necessary mirror movement. Since three screws are best made . Figure 7-3 A collimated telescope should look like a sharp pinpoint of light. With Polaris or a bright star centered within the field of view, focus with the collimation, tighten the small...
AstroMaster Manual (70EQ, 76EQ, 114EQ)
Page 30
AstroMaster Specifications AstroMaster Specifications Optical Design Aperture Focal Length Focal Ratio Secondary Mirror Obstruction -- Raleigh (arc seconds) Resolution -- Area Optical Coatings Finderscope Diagonal 1.25" Eyepieces 1.25" Apparent ... Useful Magnification Limiting Stellar Magnitude Resolution -- Dawes Limit " " Light Gathering Power Optical Tube Length Telescope Weight 21062 AM 70 EQ 31035 AM 76 EQ 31042 AM 114 EQ Refractor 70mm (2.8") 900mm f/13 n/a Fully Coated Star Pointer Erect Image 20mm (45x) 10mm (90x) 1.1° 58 Newtonian 76mm (3") 700mm f/9 25% - 6% Fully Coated...
AstroMaster Specifications AstroMaster Specifications Optical Design Aperture Focal Length Focal Ratio Secondary Mirror Obstruction -- Raleigh (arc seconds) Resolution -- Area Optical Coatings Finderscope Diagonal 1.25" Eyepieces 1.25" Apparent ... Useful Magnification Limiting Stellar Magnitude Resolution -- Dawes Limit " " Light Gathering Power Optical Tube Length Telescope Weight 21062 AM 70 EQ 31035 AM 76 EQ 31042 AM 114 EQ Refractor 70mm (2.8") 900mm f/13 n/a Fully Coated Star Pointer Erect Image 20mm (45x) 10mm (90x) 1.1° 58 Newtonian 76mm (3") 700mm f/9 25% - 6% Fully Coated...