Go Back   IceInSpace > Images > Deep Space
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #1  
Old 09-08-2014, 11:15 PM
Amaranthus's Avatar
Amaranthus (Barry)
Thylacinus stargazoculus

Amaranthus is offline
 
Join Date: Jan 2014
Location: Judbury, Tasmania
Posts: 1,203
NGC 6752 - Great Peacock Globular

One of the southern gems, this globular cluster in Pavo is arguably even more spectacular than M13 (but behind Omega Centauri and 47 Tuc), at least to observers in Australia! It covers an area similar in size to the full Moon, and lies 13,000 light years from Earth.

Taken using an ED80T CF astrograph with a Sony NEX-3 DSLR (ISO 3200)

240 x 30 sec subs (guided using PHD2 and an Orion SS G3 mono, 46 additional subs were discarded)

Captured and pre-processed with flats (light box), bad pixel map and bias in Nebulosity. Post-processed in StarTools.

Full details and high rez version here: http://www.astrobin.com/112389/0/

------

I've been having problems with flexure in my system, so will soon be converting to an OAG!

I used 30 sec subs because it's a pain to do longer with the Sony NEX-3 as it has no remote control. It is possible to go with longer subs using a mechanical shutter hold (rubber band and thimble! with scope covered after each shot), but it's sometimes more hassle than it's worth! For an example of 3 minute subs using that method, see M25 here: http://www.iceinspace.com.au/forum/s...d.php?t=124228

Anyway, this time I opted to go short and many, with high ISO, especially given that I was shooting with the Moon at 40% phase and in light-polluted skies.
Attached Thumbnails
Click for full-size image (NGC6752_ED80T_NEX.jpg)
197.9 KB69 views

Last edited by Amaranthus; 10-08-2014 at 02:35 PM.
Reply With Quote
  #2  
Old 10-08-2014, 06:39 AM
cometcatcher's Avatar
cometcatcher (Kevin)
<--- Comet Hale-Bopp

cometcatcher is offline
 
Join Date: Jan 2005
Location: Cloudy Mackay
Posts: 6,542
What a nice cluster. I seem to have overlooked this one.
Reply With Quote
  #3  
Old 10-08-2014, 09:35 AM
PeterEde (Peter)
Prince Planet

PeterEde is offline
 
Join Date: May 2013
Location: Albert Park, Adelaide
Posts: 694
Very nice Barry
Found a hole in the clouds
Reply With Quote
  #4  
Old 10-08-2014, 01:49 PM
RickS's Avatar
RickS (Rick)
PI cult recruiter

RickS is offline
 
Join Date: Apr 2010
Location: Brisbane
Posts: 10,584
Very nice, Barry!
Reply With Quote
  #5  
Old 10-08-2014, 02:54 PM
LightningNZ's Avatar
LightningNZ (Cam)
Registered User

LightningNZ is offline
 
Join Date: Oct 2011
Location: Canberra
Posts: 951
Nice colours Barry. This is a great cluster that doesn't get anywhere near enough attention. I think it's quite M13-like in appearance (though lacking the nearby spiral galaxy).
-Cam
Reply With Quote
  #6  
Old 10-08-2014, 05:11 PM
Amaranthus's Avatar
Amaranthus (Barry)
Thylacinus stargazoculus

Amaranthus is offline
 
Join Date: Jan 2014
Location: Judbury, Tasmania
Posts: 1,203
NGC 6397 "Blue Straggler" Globular Cluster

Here is another globular cluster I captured a few nights ago - same basic method, 2 hours integration of 30 second subs. This time it is NGC 6397 "Blue Straggler" in Ara, a small but pretty cluster embedded within a rich star field.

Full details and high rez here: http://www.astrobin.com/112546/

These are great targets for light polluted skies with a full moon out!
Attached Thumbnails
Click for full-size image (NGC6397_ED80T-NEX.jpg)
196.8 KB12 views
Reply With Quote
  #7  
Old 10-08-2014, 09:16 PM
cometcatcher's Avatar
cometcatcher (Kevin)
<--- Comet Hale-Bopp

cometcatcher is offline
 
Join Date: Jan 2005
Location: Cloudy Mackay
Posts: 6,542
Another nice shot Barry. This one I am familiar with.
Reply With Quote
Reply

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 On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 05:09 AM.

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