Deep NGC 3532 in HDR

avandonk · #1 27-12-2009, 08:27 PM

Hit this cluster with an all nighter after Moon set. Processed at 1.6x native pixel size. Took a lot of care with focus to get the star colours at their best.

Canon 5DH, 100ED at f/7.65 and FL 765mm with Hutech #7887 FR/FF. Hutech LPR filter. FOV approx 3x2 degrees.

Exposures 20X(30s, 1m, 2m ) and 36x4m at 1600ISO. Fridge at -10C. Usual HDR method. Transparency and seeing both good.

Large image 11MB
http://d1355990.i49.quadrahosting.co...c3532100ed.jpg

Bert

AlexN · #2 27-12-2009, 08:32 PM

Very nice Bert... Deep images of star clusters are really appealing.. And I think HDR is the best way to approach it too... Pleasing colours and range make this a really really enjoyable image to view!

How are you enjoying working with a slightly longer focal length than the 300/2.8?

AlexN · #3 27-12-2009, 08:34 PM

On closer inspection, I notice quite a few small hydrogen patches throughout the image also... Where abouts in the sky is this?

avandonk · #4 27-12-2009, 08:40 PM

NGC 3532 is three degrees below Carina. It has a high dynamic range. The image actually shows dim nebulosity and dim dust as well as the bright stars without blowing out. The 30 second exposures were needed.

Bert

strongmanmike (Michael) · #5 28-12-2009, 12:36 AM

This cluster looks great in your finder, doesn't it have a trumpler number too?

Lots of stars, nice job, looks a tad green to me though..?

Mike

TrevorW · #6 28-12-2009, 03:09 AM

I did this one myself earlier this year I like your FOV Bert

avandonk · #7 28-12-2009, 06:29 AM

Here is a better version Mike 11MB

http://d1355990.i49.quadrahosting.co...532100ed_2.jpg

and at sensor native pixel size 5MB

http://d1355990.i49.quadrahosting.co...3532100edN.jpg

Nice image Tevor. Interesting comparison of FOV of a 80ED with C size sensor to a 100ED with full frame.

Bert