#1  
Old 23-09-2016, 08:51 PM
casstony
Registered User

casstony is offline
 
Join Date: Feb 2006
Location: Warragul, Vic
Posts: 4,493
ES 0.7x reducer with TSA120

Crappy conditions but I got to test the Explore Scientific 0.7x reducer/flattener with my TSA120 between clouds tonight. No guiding, just did a go-to Hadar and got a short exposure with a 600D.

I've included the four corners at original resolution. Seems like it will work well when I get some clear weather.
At the moment I've just got a 2" nosepiece for the reducer but that's ok for APS-C. Apparently Moonlite (among others) can make up adapters to mate the ES reducer to a 3" FT.
Attached Thumbnails
Click for full-size image (IMG_0263.JPG)
193.0 KB77 views
Click for full-size image (topleft.JPG)
141.1 KB74 views
Click for full-size image (topright.JPG)
144.2 KB70 views
Click for full-size image (bottomleft.JPG)
147.6 KB67 views
Click for full-size image (bottomright.JPG)
169.7 KB67 views
Reply With Quote
  #2  
Old 23-09-2016, 09:14 PM
Camelopardalis's Avatar
Camelopardalis (Dunk)
Drifting from the pole

Camelopardalis is offline
 
Join Date: Feb 2013
Location: Brisbane
Posts: 5,425
Looks pretty darn good Tony
Reply With Quote
  #3  
Old 24-09-2016, 06:13 PM
casstony
Registered User

casstony is offline
 
Join Date: Feb 2006
Location: Warragul, Vic
Posts: 4,493
One issue with the supplied adapters is that there's no allowance for mounting a filter, but I found a simple work around. The inside of the T-adapter has a recess just slightly larger than a 2" filter; the filter can be dropped into the recess and held in using two or three pieces of self adhesive felt.
Attached Thumbnails
Click for full-size image (IMG_0277.JPG)
132.3 KB36 views
Reply With Quote
  #4  
Old 26-09-2016, 07:37 AM
wasyoungonce's Avatar
wasyoungonce (Brendan)
Certified Village Idiot

wasyoungonce is offline
 
Join Date: Jul 2006
Location: Mexico city (Melb), Australia
Posts: 2,336
Tony I gotta say I'm surprised it works with the TSA as ES really had issues making this and its optimised for the 152mm scope. A few users with the 127ED say it doesn't fully correct to the corners but your images look pretty damn good.

Because it's working so well....I'd say the 3" FT would be better bet to reduce vignetting. That said...the reducer was optimised for APS-C so maybe this would be an overkill!

Well done.

Brendan
Reply With Quote
  #5  
Old 26-09-2016, 09:45 AM
casstony
Registered User

casstony is offline
 
Join Date: Feb 2006
Location: Warragul, Vic
Posts: 4,493
Hi Brendan, I will eventually get an adapter for the FT, mainly for the security of the fitting. I might also get an M48 adapter for the camera side to allow for full frame in future.

I tried the ES reducer with my FLT98 last night and it produced eggy stars as expected. I'm going to get some T thread spacers to see if I can fix that. If I can make it work I'll have an f/4.4, 430mm scope which I'll then compare to the Esprit 80.
Reply With Quote
  #6  
Old 26-09-2016, 09:58 AM
wasyoungonce's Avatar
wasyoungonce (Brendan)
Certified Village Idiot

wasyoungonce is offline
 
Join Date: Jul 2006
Location: Mexico city (Melb), Australia
Posts: 2,336
mmmm F4.4...yum!
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 10:21 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
Bintel
Advertisement