Go Back   IceInSpace > Equipment > Equipment Discussions

Reply
 
Thread Tools Rate Thread
  #1  
Old 22-09-2020, 05:05 PM
Saturn488 (Chrys)
Registered User

Saturn488 is online now
 
Join Date: Dec 2018
Location: Melbourne
Posts: 117
Imaging Mars with a 4" Refractor

Has anyone had any luck imaging Mars with a small 4" refractor?

thinking 2x or 3x Barlow will help a lot, maybe even a 5x?
Reply With Quote
  #2  
Old 22-09-2020, 06:29 PM
sunslayr (David)
Registered User

sunslayr is offline
 
Join Date: Nov 2018
Location: Perth
Posts: 107
Really depends on what you want to see, you might be able to make out the ice caps but I wouldn't count on seeing much else in terms of terrain details. Give it a go if that's all you have, you won't get a better chance at it for another 15 years.
Reply With Quote
  #3  
Old 22-09-2020, 06:42 PM
Saturn488 (Chrys)
Registered User

Saturn488 is online now
 
Join Date: Dec 2018
Location: Melbourne
Posts: 117
Yeah I have a 3x but might buy a 5x.
Reply With Quote
  #4  
Old 22-09-2020, 06:45 PM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline
 
Join Date: Oct 2007
Location: Hinchinbrook
Posts: 19,662
That's a big ask. I'm just south of 10" at ~7m FL and that's not a trivial exercise to get details. It's bright but tiny.
Reply With Quote
  #5  
Old 22-09-2020, 07:04 PM
sunslayr (David)
Registered User

sunslayr is offline
 
Join Date: Nov 2018
Location: Perth
Posts: 107
Whats your focal length? You would probably want about f20, any more than that and it will be too dim. I might give it a go with my 4" tonight if I'm not too tired.
Reply With Quote
  #6  
Old 22-09-2020, 07:24 PM
Saturn488 (Chrys)
Registered User

Saturn488 is online now
 
Join Date: Dec 2018
Location: Melbourne
Posts: 117
Quote:
Originally Posted by sunslayr View Post
Whats your focal length? You would probably want about f20, any more than that and it will be too dim. I might give it a go with my 4" tonight if I'm not too tired.
Focal Length is 714
Reply With Quote
  #7  
Old 22-09-2020, 07:33 PM
sunslayr (David)
Registered User

sunslayr is offline
 
Join Date: Nov 2018
Location: Perth
Posts: 107
In that case I wouldn't suggest you get a 5x, I'd stick with your 3x. Now If you were to buy a cheap newt on the other hand ...
Reply With Quote
  #8  
Old 22-09-2020, 07:34 PM
Saturn488 (Chrys)
Registered User

Saturn488 is online now
 
Join Date: Dec 2018
Location: Melbourne
Posts: 117
Quote:
Originally Posted by sunslayr View Post
In that case I wouldn't suggest you get a 5x, I'd stick with your 3x. Now If you were to buy a cheap newt on the other hand ...
I was thinking that, but another telescope....

Need the bloody room haha.
Reply With Quote
  #9  
Old 22-09-2020, 08:30 PM
Saturnine (Jeff)
Registered User

Saturnine is offline
 
Join Date: Jul 2008
Location: Wollongong
Posts: 1,375
Hi Chrys

I can't give you first hand what 4" would achieve but I often use a 5" f7.5 refractor with an 3X barlow and get reasonable images from it. See my recent images posted in the Beginners Forum to give some idea of what small scopes can do.
Reply With Quote
  #10  
Old 07-10-2020, 11:36 AM
dannat's Avatar
dannat (Daniel)
daniel

dannat is offline
 
Join Date: Sep 2007
Location: Macedon shire, Australia
Posts: 3,389
a couple of guys on CN have got some great results with their quester 3.5”, 1 only uses a 2x barlow, so it’s possible
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 10:32 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Advertisement
NexDome Observatories
Advertisement
Testar
Advertisement
Limpet Controller
Advertisement
Bintel
Advertisement
Astronomy and Electronics Centre
Advertisement