Grab your sunglasses!

SimmoW (SIMON) · #1 03-03-2015, 03:40 PM

Vela region - almost! I chose the wrong NGC number, being the small cluster NGC2547, meaning that I didn't capture the primary supernova remnant. But I'm posting this as it represents a further leap in my data collection with the Sony A7s - This comprises 15 shots of Ha (12nm filter) at 6 minutes each, plus the same set for RGB, all at ISO 3200. I'm very pleased with the final result, with quite a few reattempts to both highlight the Ha data and also not destroy the RGB. It was certainly a challenge. But yeah, I may have upped the sat a bit too much??

Better luck next time, I'll be trying to shoot the main SNR at our next outing to the Snake Valley star party

Flickr Version

pluto (Hugh) · #2 03-03-2015, 03:48 PM

Looking good, I especially like the star colours

rustigsmed (Russell) · #3 03-03-2015, 03:49 PM

certainly red Simmo, where do you usually shoot? from mentone? do you use a light pollution filter for the RGB?
closely watching the A7s performing in these summer nights. it seems to hold up waaaay better than a standard (non 6d) canon.

gregbradley · #4 03-03-2015, 04:58 PM

Pretty amazing for only 90 minutes total exposure time.

The A7s seems a bit like the STL11 of DSLRs! (well mirrorless anyway!).

I take it the camera is modified. Is it also cooled?

Greg.

SimmoW (SIMON) · #5 03-03-2015, 06:01 PM

Thanks chaps. I do ALL my shooting from the ASV dark sky site now, I'm addicted to the dark skies there.

I wish the camera was cooled. It is modded though. Noise is there alright, but it's incredibly uniform, so PI and LR noise removal is very effective.

RickS (Rick) · #6 03-03-2015, 06:01 PM

Looks good, Simon! Could be a bit redder perhaps?

alpal · #7 03-03-2015, 10:51 PM

Hi Simmo,
quite good as you certainly have lots of signal.
Other pictures I see - show the NGC 2547 cluster as containing blue stars:

http://www.astropilar.com.ar/cumulos...C2547_1_HR.jpg

http://www.robgendlerastropics.com/NGC2547L.jpg

Do you have some shorter sub frames to show their colours?
Maybe you hit the full well depth & lost their colour?

cheers
Allan

strongmanmike (Michael) · #8 04-03-2015, 08:13 AM

That's a great image Simon, a classic look and crisp

Mike

multiweb (Marc) · #9 04-03-2015, 10:21 AM

Great. That's an interesting field. That vertical line looks like a water fall.

Geoff45 (Geoff) · #10 04-03-2015, 11:54 AM

Quote:

Originally Posted by SimmoW

But yeah, I may have upped the sat a bit too much??

No, the saturation is great. Nice image Simon.