What Antenna?

Tandum (Robin) · #1 22-02-2010, 05:14 AM

Thought I'd bang this one up. Not as good an image as I wanted, twas awash with light pollution gradients so a good chunk of it went with the pollution. I really need that new wheel nosepiece that takes LP filters. Also see that line running to the right from the star on the right ... what the?

QHY9 - 10" Newt - Cropped image no correctors.

2hours L binned x1, 45min RGB binned x2.

spearo (Frank) · #2 22-02-2010, 06:52 AM

tough target
well done
i see the dark line from the star. Weird
frank

pmrid (Peter) · #3 22-02-2010, 07:32 AM

[QUOTE=Tandum;562153] Also see that line running to the right from the star on the right ... what the?
QUOTE]
Yeah!! That's one of my "must do" targets. Good on you. I read somewhere that those lines will occur when a star oversaturates and the Anti-Blooming isn't working properly. A possibility?
Peter

AlexN · #4 23-02-2010, 09:21 PM

A really great go at the Antennae galaxies given your extreme light pollution situation mate.. that 10" really has the guts to suck the dim stuff out doesn't it!

My findings so far with the 8300 + LPS filter is that it makes the world of difference.. I took a few lum frames last new moon without it, and a few with it, processed them the same and the difference in the images is extreme.. You'll be laughing with that new nose piece!

I can't wait to see you hunt down some galaxies with this big photon funnel!!

Alex.

Tandum (Robin) · #5 23-02-2010, 10:18 PM

Yep, I might give it away till the nosepiece turns up and I can get a filter on it. What's coming out of it is not easy to deal with, check this mess out. Might organise a shield for the end of the tube as well.

Pete, Yes it's tied up with antiblooming. I've been told they have everything set on a hair trigger to keep sensor sensitivity as high as possible. Others got around it by using normal download speed instead of slow. I guess I'll try that but it means new gain/offset/bias and darks

AlexN · #6 23-02-2010, 10:26 PM

Holy hell thats some gradient problem!! You can clearly see the tails of the galaxies though.. so at least you know there is hope!!

A shield for the tube is a good plan.. will slow dew down a bit, may even stop it completely, and will increase contrast by stopping stray light from entering tube so easily... Downside is it will increase the 10"s 'sail area' a bit..