Go Back   IceInSpace > IceTrade Classifieds > IceTrade Archives
Register FAQ Calendar Today's Posts Search

 
 
Thread Tools Rate Thread
  #1  
Old 17-11-2005, 11:23 PM
Iddon's Avatar
Iddon
Registered User

Iddon is offline
 
Join Date: May 2005
Posts: 226
Wanted - pre-loved SCT Focal Reducer

Meade or Celestron 3.3 or 6.3 for my Lx200.
Anyone got one wasting away they wanna turn into some readies ?
  #2  
Old 18-11-2005, 10:16 AM
FOOTPRINT
Registered User

FOOTPRINT is offline
 
Join Date: Oct 2005
Location: Hervey Bay, Qld.
Posts: 339
Focal reducer

Hi Grant,
Suggest you look at http://webcaddy.com.au/astro/adapter.htm
Item "F2-VFR-T" might fit your needs at a good price, Im using one which works well in both the SCT and the ED80, bit of Coma at F5 which I can live with.

cheers...Jim
  #3  
Old 18-11-2005, 06:58 PM
Iddon's Avatar
Iddon
Registered User

Iddon is offline
 
Join Date: May 2005
Posts: 226
thanks - I assume this fits between the camera adaptor and the input sleeve of the main tube ?
  #4  
Old 18-11-2005, 08:05 PM
Striker's Avatar
Striker (Tony)
Whats visual Astronomy

Striker is offline
 
Join Date: Dec 2004
Location: Brisbane
Posts: 5,062
Iddon,

I have a brand new Meade series 4000 F3.3 focal reducer.

You can have it for $200 that includes postage.
  #5  
Old 18-11-2005, 11:00 PM
Iddon's Avatar
Iddon
Registered User

Iddon is offline
 
Join Date: May 2005
Posts: 226
thanks Tony - tempting....
But have reviewed my spec to just 6.3 as I think this best suits the 300D. Thanks for the kind offer
  #6  
Old 19-11-2005, 07:53 AM
Striker's Avatar
Striker (Tony)
Whats visual Astronomy

Striker is offline
 
Join Date: Dec 2004
Location: Brisbane
Posts: 5,062
Yes definetly...the 3.3 is no good for DSLR's..that's for sure.

More designed for dedicated CCD work.
  #7  
Old 20-11-2005, 05:09 PM
5ash's Avatar
5ash (Philip)
Earthling

5ash is offline
 
Join Date: Mar 2005
Location: Hunter valley. nsw
Posts: 1,117
Hi grant
I use an 18cm focal length acromatic lens in my lx90 and it works fine . seems to achieve about .6 reduction . i can send you some pics of the moon showing with and without if your interested
philip
  #8  
Old 20-11-2005, 06:42 PM
Iddon's Avatar
Iddon
Registered User

Iddon is offline
 
Join Date: May 2005
Posts: 226
5ash - would be most interested in that Yes please.
  #9  
Old 20-11-2005, 10:50 PM
acropolite's Avatar
acropolite (Phil)
Registered User

acropolite is offline
 
Join Date: Feb 2005
Location: Launceston Tasmania
Posts: 9,021
5ash wrote
Quote:
I use an 18cm focal length acromatic lens in my lx90 and it works fine
Philip, Can you give more details on the lens used and how it was mounted etc???
  #10  
Old 21-11-2005, 11:08 PM
5ash's Avatar
5ash (Philip)
Earthling

5ash is offline
 
Join Date: Mar 2005
Location: Hunter valley. nsw
Posts: 1,117
homemade focal reducer

Hi grant and phil,
I used an achromatic lens from an old spectroscope telescope, its about 2.5 cm in daimeter witha focal length of about 18cm. I force fitted it into a rubber eye cup from a binocular microscope and trimmed the rubber to make it cylindrical. it is a push in fit into the visual back of the lx90 before you attach the screw on adapter that takes the star diagonal. I got the idea from an amateur from a yahoo group who stated in one of his astrophotos that he used a homemade focal reducer. on contacting him he said he used the achromatic objectives from binoculars. So i experimented with a variety of lenses and found the one above to work. Im sure it could be refined but my "Heath Robinson " focal reducer works for me.Have attached some photos. one of the moon without and one with the focal reducer. Also a photo of m42 with lpi and focal reducer.
philip
Attached Thumbnails
Click for full-size image (copernicus.jpg)
75.9 KB16 views
Click for full-size image (orion 1 cropped.jpg)
21.4 KB18 views
 

Bookmarks


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 Off
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 07:37 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement