Celestron AstroMaster 90EQ Telescope Support Question
Celestron AstroMaster 90EQ Telescope Support Question
Find answers below for this question about Celestron AstroMaster 90EQ Telescope.Need a Celestron AstroMaster 90EQ Telescope manual? We have 9 online manuals for this item!
Question posted by soubryjp on March 31st, 2015
Diagonal
Hello,Thank you for your video, on the Celestron AstroMaster, it is very helpful! I am just wondering if the diagonal can be mounted sideways for terrestrial viewing?Thank you in advance!Regards,JPS
Current Answers
Answer #1: Posted by TechSupport101 on March 31st, 2015 9:41 PM
TechSupport101
Member since:
May 24th, 2013 Points: 12,171,305
Member since:
May 24th, 2013 Points: 12,171,305
Please see the "Mounting" section of the product's manual here http://www.helpowl.com/manuals/Celestron/AstroMaster90EQTelescope/222716 for the best advice on your mounting options.
Related Celestron AstroMaster 90EQ Telescope Manual Pages
AstroMaster Manual (90EQ and 130EQ) - Page 1
ENGLISH
AstroMaster Series Telescopes
INSTRUCTION MANUAL
● AstroMaster 90 EQ # 21064 ● AstroMaster 130 EQ # 31045 ● AstroMaster 90 EQ-MD # 21069 ● AstroMaster 130 EQ-MD # 31051
AstroMaster Manual (90EQ and 130EQ) - Page 2
...Telescope Tube to the Mount 8 Installing the Diagonal & Eyepieces (refractor 9 Installing the Eyepieces on the Newtonians 9 Moving the Telescope Manually ...10 Balancing the Mount in R.A...10 Balancing the Mount in Dec...10 Adjusting the Equatorial Mount ...11 Adjusting the Mount in Altitude...11 TELESCOPE... Terrestrial Photography ...26 TELESCOPE MAINTENANCE ...27 Care and Cleaning of the ...
AstroMaster Manual (90EQ and 130EQ) - Page 3
The AstroMaster Series of telescopes come in both of an AstroMaster Series telescope. These telescopes were designed for clear, crisp images. • Smooth functioning, rigid equatorial mount with your equipment. astronomy software which provides education about the sky and printable sky
maps. • All models can be familiar with 1.25" legs ensures ...
AstroMaster Manual (90EQ and 130EQ) - Page 4
Diagonal 7. Equatorial Mount 15. Telescope Optical Tube 2. Star Pointer Finderscope 5. Dec. Dovetail Mounting Bracket 3. Focus Knob 8. Objective Lens
4 Tripod 12. Slow Motion Cable
9. 16
15 14 13 12
1 2
3 4
5
8
9
7 6
10
11
Figure 1-1 AstroMaster 90 EQ Refractor
1. RA. Setting Circle 4. Eyepiece 6. R.A. Latitude Adjustment Screw 10. Accessory Tray 11. ...
AstroMaster Manual (90EQ and 130EQ) - Page 5
...Tripod 10. Star Pointer Finderscope 13. R.A. Slow Motion Cable 7. 12
14
1 2
11 10
3
4 13
5 6
7
9 8
Figure 1-2 AstroMaster 130 EQ Newtonian
1. Primary Mirror 5. Setting Circle 14. Tube Ring 3. Slow Motion Cable 6. Latitude Adjustment Screw
8. Counterweights 11. Accessory Tray 9. Focus Knob
5 Setting Circle 12. R.A. Eyepiece 2. Telescope Optical Tube 4. Dec.
AstroMaster Manual (90EQ and 130EQ) - Page 6
...the various parts and familiarize yourself with attached sky pointer and tube rings (130 EQ only), CG-3 equatorial mount, counterweight bar, two 4.8 lbs. (2.2kg) counterweights, R.A. & Dec. Remove the tripod from the ... 20mm eyepiece - 1.25" (erect image for 130 EQ), erect image diagonal 1.25" (for your AstroMaster telescope. Stand the tripod upright and pull the tripod legs apart until the ears ...
AstroMaster Manual (90EQ and 130EQ) - Page 7
... steady. The completed assembly is a German equatorial mount (CG-3) that the counterweight bar points toward the ground. 4. The AstroMaster mount is shown in the Dec. Slide one and then lock
securely. 7.
Figure 2-9
Figure 2-10
Installing the Counterweight Bar & Counterweights
Figure 2-11
To properly balance the telescope, the mount comes with bolt attached under the tripod...
AstroMaster Manual (90EQ and 130EQ) - Page 8
...hold the telescope in the same manner as it securely in both R.A.
Hint:
For maximum rigidity of the mount. cable. Attaching the Slow Motion Cables
The AstroMaster mount comes ... mount, just below the telescope mounting platform. Shaft on the dovetail mounting platform to the telescope in place. 4. For the 90 EQ refractor the mounting bar is toward the top of the telescope...
AstroMaster Manual (90EQ and 130EQ) - Page 9
... diagonal can be rotated to any position which is removed from the eyepiece adapter.
2. Again, when doing this make sure the thumb screw is an erect image model that is most favorable for terrestrial viewing.
3. Figure 2-19. The eyepiece fits directly into the focuser of Dec. This allows you will use the telescope visually...
AstroMaster Manual (90EQ and 130EQ) - Page 10
... any sudden motions when the Dec.
and Dec. To loosen the clutches on top of the mount (make rough adjustments, loosen the R.A. Lock Knob on the telescope, unlock the locking knobs. Lock Knob on the mount, the telescope should also be properly balanced around the declination axis.
To eliminate undue stress on top of...
AstroMaster Manual (90EQ and 130EQ) - Page 11
... (Locking Bolt)
Figure 2-24
11
Latitude Adjustment Screw (Rear) The actual process of polar alignment, that is making the telescope's axis of rotation parallel to 60°. The latitude adjustment on the AstroMaster mount has a range from approximately 20° to the Earth's, is best to the Earth's axis of rotation, a process known...
AstroMaster Manual (90EQ and 130EQ) - Page 13
... of a refractor (i.e., without the diagonal), the image is correctly oriented in a refractor
Focusing
To focus your telescope until the red dot, seen through the Star Pointer, merges with the object as viewed using the erect image eyepiece supplied with eyepiece directly in every aspect. Image orientation as viewed with the AstroMaster Newtonians, the image is...
AstroMaster Manual (90EQ and 130EQ) - Page 14
...AstroMaster 90 EQ telescope. The general rule is 3.5" inches in the main telescope. 3. For example, the AstroMaster 90 EQ is that came with your telescope. You can be installed already. Without moving the main telescope...Experiment as to work in rural areas.
To determine the magnification of your telescope just by 60 gives a maximum useful magnification of 50 power. To determine ...
AstroMaster Manual (90EQ and 130EQ) - Page 15
.... This inconsistency can also make it difficult to focus when viewing terrestrially. Determining Field of View
Determining the field of view is important if you want to remove them when observing with any optical instrument, there are observing. To convert degrees to focus your telescope. In most cases you will affect the ability to feet...
AstroMaster Manual (90EQ and 130EQ) - Page 17
... NOT put you move one degree further south, the same thing happens again. your telescope: 1. This means the pole is no longer directly overhead. The AstroMaster CG-3 mount can be adjusted from Los Angeles, which has a declination of the telescope at the right elevation above the northern horizon.
To align your latitude is now...
AstroMaster Manual (90EQ and 130EQ) - Page 23
....
Installation of celestial objects, Celestron offers a single axis DC motor drive for the AstroMaster equatorial mount. slow motion shaft and a motor bracket that mounts to remove it in declination. Slide the open end of the flexible motor coupler over the flat portion of speed, the telescope should increase the motor speed.
Mounting Screws
Motor Bracket and...
AstroMaster Manual (90EQ and 130EQ) - Page 25
... deep-sky objects have different densities and, therefore, bend light differently. Understanding viewing conditions and the effect they appear black and white.
Hazy skies absorb more light...because of your telescope during an observing session. Light Pollution Reduction filters help you need to -place.
You can be observed from the brightest stars through your telescope. The air ...
AstroMaster Manual (90EQ and 130EQ) - Page 26
... how to fit this screw). Your telescope is done by using the T-threads of the eyepiece adapter (Figure 2-19) where the T-ring will need to get the best images possible. CCD Imaging for detailed information on the market. The AstroMaster series of various scenic views, wildlife, nature, and just about anything. you may want...
AstroMaster Manual (90EQ and 130EQ) - Page 31
... include a Motor Drive
31 Raleigh (arc seconds) Resolution -- Dia. - Area Optical Coatings Finderscope Diagonal 1.25" Eyepieces 1.25"
Apparent FOV -- 20mm at 50° -- 10mm at 40°
Angular Field of View w/20mm eyepiece Linear FOV w/20mm eyepiece -ft/1000yds
Mount RA & DEC Setting Circles RA & DEC Slow-Motion Cables Tripod Leg diameter 1.25...
Quick Setup Guide for AstroMaster 70EQ and 90EQ - Page 1
... at the bottom of each of the tripod mounting platform. AstroMaster 90EQ-MD
Questions or Problems with center support bracket, equatorial mount, two eyepieces, two counterweights, counterweight bar, two slow motion cables, erect image diagonal, accessory tray, battery, owner's manual, and The Sky™ CD Software. www.celestron.com
Quick set up the tripod, spread the...
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