Houghys cooled DSLR on 300mm f2.8 lens from Bert

tornado33 · #1 22-04-2007, 12:28 AM

Hi
Houghy kindly left his cooled DSLR with me for the night. Put it on the 300mm f2.8 flourite lens, used the Baader 7 Nm Ha filter. Images taken with sensor arounf 4 or 5 degrees. Ambient around 17, an uncooled cameras sensor probably round 25 degrees.

Eta Carina and the Running Chicken nebula, both 2x10 mins ISO 400, combined with just 1 dark taken at same sensor temp.

During processing I noted a LOT less noise, I wondered if it was even worth taking darks hehehehehe but I did anyway.

Sky was poor, bits of cloud and very light and hazy

At a really dark site this cooled camera and the Flourite lens would make a devastating combination.
Scott

strongmanmike (Michael) · #2 22-04-2007, 12:39 AM

Any image will look good displayed at that size, is a bigger version available to really examine?

Looks pretty good none the less

Mike

tornado33 · #3 22-04-2007, 12:50 AM

Heres a full res version
http://www.iceinspace.com.au/uploads...400ha5deg2.jpg
I didnt shoot in full colour as the sky was too bright and wouldnt do the camera and lens justice, so stuck to narrowband imaging. Youll be doing narrowband imagng with your rig Mike?
Scott

strongmanmike (Michael) · #4 22-04-2007, 01:47 AM

Ah that's better

Not bad at all!

Hmm? Looks to be a good camera and great lens!

Speaking of cooling..? I had my FLI ProLine 11002 in the dinning room doing some testing yesterday, it was 25degC in the room and the camera got the chip to -35degC and held it there running at 99% cooling capacity

One reason the camera is so big, its case acts as a heat sink for outa this world cooling.

http://www.pbase.com/strongmanmike20...proline_images

Should have the ion canon assembly mounted on the N12 today for balance and cable routing tests ready for first light next opportunity.

Mike

Ingo · #5 22-04-2007, 02:52 AM

Fantastic shot. I'd love to see what you could do with a 200 F1.8 or a Nikon 200 F2 (since the nikon is still available for purchase and the canon is discontinued)

RB (Andrew) · #6 22-04-2007, 10:04 AM

Beautiful shots Scott, that camera has heaps of potential and coupled with that lens makes it a killer combo !!!!

I'm so envious David !

avandonk · #7 22-04-2007, 10:25 AM

A really good result Scott and even better than I imagined for that combination of a cooled Canon DSLR and very fast quality telephoto lens.
I was thinking of taking some images of Carina with a Halpha fiter plus the 5DH and the 300mm F2.8L. With a further twist by doing a high dynamic range image with EasyHDR. That way all the very faint nebulousity would show without blowing out the brighter parts of the nebula. With the cooled camera your abilty to get very long exposures with a lot less noise means you could go very deep.
The further possibilities of your combination for narrowband imaging would also be spectacular.

Bert