580483
31
Zoom out
Zoom in
Previous page
1/32
Next page
31
A
A
s
s
t
t
r
r
o
o
M
M
a
a
s
s
t
t
e
e
r
r
S
S
p
p
e
e
c
c
i
i
f
f
i
i
c
c
a
a
t
t
i
i
o
o
n
n
s
s
21064 & 21069 31045 & 31051
AM 90 EQ AM 130 EQ
Optical Design Refractor Newtonian
Aperture 90mm (3.5") 130mm (5")
Focal Length 1000mm 650mm
Focal Ratio f/11 f/5
Secondary Mirror Obstruction -- Dia. - Area n/a 31% - 10%
Optical Coatings Multi-Coated Fully Coated
Finderscope Star Pointer Star Pointer
Diagonal 1.25" Erect Image n/a
Eyepieces 1.25" 20mm (50x) 20mm Erect
Apparent FOV -- 20mm at 50° Image (33x)
-- 10mm at 40° 10mm (100x) 10mm (65x)
Angular Field of View w/20mm eyepiece 1.0° 1.5°
Linear FOV w/20mm eyepiece -ft/1000yds 53 79
Mount Equatorial CG3 Equatorial CG3
RA & DEC Setting Circles yes yes
RA & DEC Slow-Motion Cables yes yes
Tripod Leg diameter 1.25" yes yes
CD-ROM "The Sky" Level 1 yes yes
Highest Useful Magnification 213x 306x
Limiting Stellar Magnitude 12.3 13.1
Resolution -- Raleigh (arc seconds) 1.54 1.06
Resolution -- Dawes Limit " " 1.29 0.89
Light Gathering Power 165x 345x
Optical Tube Length 36" (91cm) 24" (61cm)
Telescope Weight 27 lbs. (12.2kg) 28 lbs. (12.7kg)
Note: Specifications are subject to change without notice or obligation
Note: # 21069 & # 31051 include a Motor Drive
31


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Celestron AstroMaster 90 EQ-MD at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Celestron AstroMaster 90 EQ-MD in the language / languages: English as an attachment in your email.

The manual is 10 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of Celestron AstroMaster 90 EQ-MD

Celestron AstroMaster 90 EQ-MD User Manual - German - 32 pages


The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info