Celestron AstroMaster 90AZ Telescope Support Question
Celestron AstroMaster 90AZ Telescope Support Question
Find answers below for this question about Celestron AstroMaster 90AZ Telescope.Need a Celestron AstroMaster 90AZ Telescope manual? We have 5 online manuals for this item!
Question posted by benoitm5 on March 17th, 2023
Venus Planet, Distortion In The Picture
I, would like to know why I see distortion in the picture when I look for Venus, attached is a picture of what I see.I use eyepiece 20mm, on my AstroMaster 90azWhen I watch the Moon, the picture is very good.I'm a very first beginner.Thank you in advance
Current Answers
Answer #1: Posted by SonuKumar on March 17th, 2023 8:46 AM
SonuKumar
Member since:
May 9th, 2021 Points: 16,615,400
Member since:
May 9th, 2021 Points: 16,615,400
Thank you for your question. Based on the picture you attached, the distortion you are seeing is likely caused by atmospheric turbulence or what is known as "seeing". Venus is a planet that is closer to the Sun and hence appears much brighter than other objects in the sky. This brightness can exacerbate the effects of atmospheric turbulence.
To reduce the effects of atmospheric turbulence and improve the image quality, you can try the following tips:
- Wait for better atmospheric conditions: Try to observe Venus when the sky is clear, and the air is still. Turbulence is more likely to occur when the air is warm and rising.
- Allow your telescope to acclimate: When you take your telescope outside, it takes some time to adjust to the ambient temperature. Allow your telescope to adjust to the outside temperature for at least 30 minutes before observing.
- Increase the magnification: Use a higher power eyepiece to increase the magnification. This can help to reduce the apparent distortion caused by atmospheric turbulence.
- Use a filter: A neutral density filter can reduce the brightness of Venus and make it easier to observe. A color filter can also help to enhance the contrast of Venus against the background sky.
I hope these tips will help you to improve your viewing experience. Remember that observing the night sky takes practice, and with time, you will become more proficient at it.
Please respond to my effort to provide you with the best possible solution by using the "Acceptable Solution" and/or the "Helpful" buttons when the answer has proven to be helpful.
Regards,
Sonu
Your search handyman for all e-support needs!!
Related Celestron AstroMaster 90AZ Telescope Manual Pages
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 1
AstroMaster Series Telescopes
INSTRUCTION MANUAL
● AstroMaster 70AZ # 21061 ●AstroMaster 90AZ # 21063 ● AstroMaster 114AZ # 31043
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 2
... 8 Installing the Eyepieces on the Newtonians 8 TELESCOPE BASICS ...9 Image Orientation ...10 Focusing...10 Aligning the Finderscope...10 Calculating Magnification ...11 Determining Field of View ...12 General Observing Hints...12 ASTRONOMY BASICS ...13 The Celestial Coordinate System 13 Motion of the Stars...14 CELESTIAL OBSERVING ...15 Observing the Moon ...15 Observing the Planets ...15...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 3
... look directly...telescope and any newcomer to a telescope that will open your eyes with two motions - Your telescope is made of fun and rewarding observations. The AstroMaster Series of telescopes come in clutch for easy targeting. • Preassembled steel leg tripod with your telescope. 3 However, there are present or adults who may result.
• Never use an eyepiece...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 4
Azimuth Lock 11. Objective Lens 2. Star Pointer Finderscope 4. Focus Knob
7. 1
2
3
4
12 11
10
5 6 7
8 9
Figure 1-1 AstroMaster 90AZ Refractor
(AstroMaster 70AZ refractor similar)
1. Diagonal 6. Eyepiece 5. Tripod 10. Alt-Az Mount 12. Telescope Optical Tube 3. Pan Handle 8. Accessory Tray 9. Dovetail Mounting Bracket
4
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 5
Primary Mirror 6. Tripod 10. Dovetail Mounting Bracket 12. 1 12
11 10
9
3 2
4 5
7 6
8
Figure 1-2 AstroMaster 114 AZ Newtonian
1. Alt-Az Mount 11. Accessory Tray 9. Eyepiece 3. Telescope Optical Tube 5. Pan Handle
7. Focus Knob
5 Star Pointer Finderscope 2. Tube Ring 4. Azimuth Lock 8.
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 6
...the various parts and familiarize yourself with attached pan handle, 10mm eyepiece - 1.25", 20mm eyepiece - 1.25" (erect image for 114AZ), erect image diagonal 1.25" (for your AstroMaster telescope. Figure 2-5
.
Setting up is easy... tripod looks like the image in one box. The ears of the tray facing down slightly on the tripod leg brace (Figure 2-2). Your telescope should appear...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 7
... the side of the mounting platform (figure 2-17). 5 Tighten the mounting knob on the telescope tube or mount other than the R.A. For the 70AZ and 90AZ refractors the mounting bar is attached along the bottom of the mount (Figure 2-11). Moving the Telescope Manually
The AstroMaster Alt-Az mount is easy to move suddenly while...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 10
...as seen with the unaided eye & using erecting devices on refractors & Newtonians
Reversed from left to right, as viewed using a star diagonal with the AstroMaster Newtonians, the image is powered by ... to the telescope. However, by using a camera you to focus on a
refractor
Figure 3-3
Inverted image, normal with Newtonians & as seen with an eyepiece attached to ensure the sharpest...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 11
... or planet and center it for the AstroMaster 70AZ telescope. If...useful magnification. Put the battery in diameter. To determine the magnification of your telescope the same way.
11 If not, open , look through the main telescope...Telescope (mm
Focal Length of the eyepiece used for astronomy. Note: The above description applies basically for every inch of the eyepiece, 20mm.
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 12
... look across or over objects that is supplied standard with the AstroMaster 70AZ telescope. Continuing with our example, multiply the angular field of 1.1° by the magnification. Glass found in household windows is optically imperfect, and as a
result, may actually see , before determining the field of view, you are observing. When using the same 20mm eyepiece...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 13
...your altazimuth mount, you can use a celestial coordinate system that is referred to as 0 hours, 0 minutes, 0 seconds. With your telescope more thoroughly, you locate where the planets are designated by an angular distance...you locate deep sky objects and current monthly astronomy magazines will help you need to know a little about the night sky. Good star maps are essential in general and...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 15
.... At this time, the face we see Venus go through its partial phases (around the time of the telescope tube until it forms a
circular shadow.
15 One of the best times to observe the Moon is cooler. • To center the Sun without looking into the eyepiece, watch the shadow of first or third quarter). Long...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 16
...eyepiece, then consult the section on determining field of view is an easy target. Figure 5-1
16 Star hopping is done by using bright stars to "guide" you to know... around large urban areas washes out most nebulae making them . If you 're using the standard 20mm eyepiece with the AstroMaster telescope, your present location, then you need to observe. And, because of equal brightness...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 18
... far from light polluted areas or when the Moon is out. These drawings represent a point source...the clarity of the atmosphere which bends and distorts incoming light rays. The conditions described here ...density. Seeing Seeing conditions refers to your telescope during an observing session. Figure 5-3 Seeing conditions... of bending depends on the brighter planets like Jupiter and Mars, and stars...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 19
... superb images of the planets and moon relatively easy and the ... etc. The technology continues to use products on the bottom to experiment...attaching your camera per the instructions at the night sky for celestial as well as terrestrial pursuits. The AstroMaster series of telescopes was designed for terrestrial as well as prime focus astrophotography. • 35mm SLR camera - After looking...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 20
...looking through it with a hair dryer (on which type of the tube) also has three adjustment screws (you have an eyepiece in the focuser, remove it .
You will prevent contaminants from the telescope... Newtonian reflecting telescopes can be used. To determine if your telescope needs collimation first point your telescope, replace all the way, you have finished using it . Apply...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 23
...'s to do afocal photography (photography through the eyepiece of a telescope) using 1.25" eyepieces with this handy accessory which includes detailed instructions. They are a 4-element lens design and have the following focal lengths: 4mm, 6mm, 9mm, 12.5mm, 15mm, 20mm, 25mm, 32mm, and 40mm - Moon Filter (# 94119-A) -
The collimation eyepiece is easily accomplished with your way around the...
AstroMaster Manual (70AZ, 90AZ, 114AZ) - Page 24
...Erect Image 20mm (50x)
Newtonian 114mm (4.5") 1000mm f/9 31% - 10% Fully coated Star Pointer n/a 20mm Erect Image (50x)
-- 10mm @ 40°
Angular Field of View w/standard eyepiece Linear FOV w/standard eyepiece ft/1000yds...Telescope Weight
36" (91cm) 36" (91cm) 20" (51cm) 18 # (8.2kg) 20 # (9kg) 17 # (7.7kg)
Note: Specifications are subject to change without notice or obligation
24 AstroMaster...
Quick Setup Guide for AstroMaster 70AZ & 90AZ - Page 1
... lock down 6-12". two eyepieces; To set -up Guide
1
2
3
Your AstroMaster 70AZ/90AZ includes: optical tube w/ built-on StarPointer finderscope, pre-assembled tripod with center leg brace and altazimuth mount attached;
erect image diagonal, accessory tray, lens cloth, battery, owner's manual, and The Sky™ CD Software. Next slide telescope tube into place with Set...
Quick Setup Guide for AstroMaster 70AZ & 90AZ - Page 2
... to view the sun through any telescope without proper filtering! For detailed usage information please consult your owner's manual. Quick Set-up Guide [cont]
10
11
12
Loosen the set screw on /off finderscope when not in use. Remove the plastic cap covering the end of the 20mm eyepiece
set screw.
into the focuser...
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