#21  
Old 14-04-2018, 01:20 PM
astronobob's Avatar
astronobob (Bob)
Casual Cosmos Capturer

astronobob is offline
 
Join Date: Jun 2010
Location: Gold Coast SE QLD
Posts: 3,691
Quote:
Originally Posted by Camelopardalis View Post
Bob, I have both a 1600 and a 178 that I use with my Esprit 100 (550mm F/L).

I find the 1600 is just collects signal more quickly (larger pixels) and calibrates very consistently, whereas the 178 has some whacky amp glow that makes it more challenging. The dark frames I've seen from a 183 are similarly haunted.

The objects you want to chase would no doubt be better served by a larger scope than I'm using, in which case I'd say it swings in favour of the 1600. The reality of the conditions in SE QLD the majority of the time means that we'd be really lucky to see any improvement in resolution with the smaller pixels of the 178/183, and they're a bigger hassle to use
Thanx, Dunk, taken onboard champ
I am also considering that my SkyWatcher Newts dont have the best optic surfaces about either, prob 1/5 - 1/8th wave; not 1/15 - 1/20th like the finest out there.
SE Qld going up crap-creek without a paddle at best of times,
Overall,, getting through the LP with mono, & the extra resolution with out the bayer matrix should tickle the armpits enough
Reply With Quote
  #22  
Old 14-04-2018, 04:15 PM
Camelopardalis's Avatar
Camelopardalis (Dunk)
Drifting from the pole

Camelopardalis is offline
 
Join Date: Feb 2013
Location: Brisbane
Posts: 4,528
Bob, I’m not sure how much difference a better surface would have over the course of a “long” exposure DSO image with any of the above sensors, I’d reckon the conditions would be doing their level best to muck it up

Btw, by “long” I mean a couple of minutes...with more aperture than my 4” you might be down to a couple of minutes or thereabouts even with narrowband.
Reply With Quote
  #23  
Old 15-04-2018, 12:55 AM
astronobob's Avatar
astronobob (Bob)
Casual Cosmos Capturer

astronobob is offline
 
Join Date: Jun 2010
Location: Gold Coast SE QLD
Posts: 3,691
I'm not sure about optic quality either, Dunk, just a thought ?
Reckon your quite on par with the exposures tho
Bit of trial & error when/if happens will no doubt be atleast amusing - part & parcel
I should check through the 'deep sky' images for some stats aswell.
Cheers.
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 02:16 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
OzScopes Authorised Dealer
Advertisement
Bintel
Advertisement
SkyWatcher Australia
Advertisement
Lunatico Astronomical
Advertisement
NexDome Observatories
Advertisement
Meade Australia
Advertisement
Nitecore
Advertisement
Astronomy and Electronics Centre
Advertisement