Ngc1532

[gregbradley]

Here is another galaxy image I took over the Christmas/New year Period.

5:30 hours, Tak BRC250, FLI Microline 8300 camera, Astronomik filters, Tak NJP mount.

A photogenic galaxy that is relatively bright.

This one also took a long time to process. I had some green gradients despite being taken at my dark site. I think a bit of light from my monitor must have gotten in.

Taken during a period of good seeing.

http://upload.pbase.com/image/108657891

Greg.

[peeb61]

Greg...wow! As sharp as a tak! The colours are spot on.

Very impressive! (And green gradients with envy)

Paul

[AlexN]

Beautiful object... :)

[Bassnut]

Pops out of the screen Greg, nice contrast with the jet black background. Again, nice change and top work (sheesh your a busy imager ;-)

[renormalised]

Nice shot....can see those gradients, though. But the galaxy is sweet:D

[Ken]

Greg excellent shot of a very unusual Galaxy.
You must have very good seeing at your site.
Clear skies Ken

[gregbradley]

Thanks Ken.

Yes the seeing is very good at times although not always. Probably 60% of the time though.

Here is a crop:

http://www.pbase.com/image/109129084

Greg

[gregbradley]

Yes I just noticed that. I thought I handled that - oh well back to the drawing board!

Greg.

[gregbradley]

Thanks Fred.

The period between Boxing Day and Jan 5 was almost completely clear nights every night. Mostly with good seeing as there was a high pressure system around.

Greg.

[Jen]

:thumbsup: beautiful pic Greg :thumbsup:

[gregbradley]

Thanks Jen.

Greg.

[RB]

An unusual object and stunningly beautiful, very nice capture, well done Greg !!

[marc4darkskies]

Another beautiful shot there Greg! Well done!! :thumbsup::thumbsup: Keep pumping them out!!

Cheers, Marcus

[gregbradley]

Thanks for that Andrew. There are quite a few nice galaxies up for imaging at the moment. Perhaps summer/autumn is galaxy season in
the southern hemipshere.




Thanks Marcus. I am getting a Baader flatfield corrector so I can put the U16M on the TEC and run it at F14 or F21 or beyond as well as do planetary at up to F56 (it'll do up to 8X with a 50mm corrected circle).

So 17 megapixel at F14 could be interesting for galaxy work. Not sure what it will mean with exposure time. How did you find F11 for your Horsehead and exposure time?

Greg.

Greg.

[marc4darkskies]

Let's just say that at F11.7 I have to be pretty patient. I imagine F14 on your 180 would be similar. Not sure the benefit of going much more than that though (?) I'm not thrilled with the TOA 1.6x extender - it works but it's only a 40mm circle and not as flat as I'd like. Look forward to seeing the results you get.

Cheers, Marcus

[gregbradley]

Yes it will be an experiment but fortunately I can use it also for planetary work so if it doesn't work out it won't be for nothing.

Roland Christen posted about the benefits of long focal length APO imaging a while ago to obtain max resolution from your scope.

Greg.

[Garyh]

beautifully done again Greg!
You are doing soo sweetly on these little galaxies!
:thumbsup:

[strongmanmike]

Sorry for not comenting earlier Greg.

This is great. I generally don't mind optical effects in images but in this case I have to say that star does destract the eye a little, not bad just annoyingly, it looks marvelous as an even tighter crop IMO

Excellent res too

Mike

[Ric]

Avery nice image Greg, I love it's unusual shape.

Cheers

[spearo]

very nice image indeed
frank

[gregbradley]

Thanks Gary. That was the original intention behind getting the ML8300. To get enough image scale to image galaxies. I wouldn't mind a bit more image scale but F5 is a great F ratio to image at.

Greg.



I've had a few bad reflections in some of those galaxy images. I like this crop. I also posted a crop earlier too that was similar. I desaturated the star as it was obviously in the blue filter. I have since received some spacers from Gerd for these Astronomik filters. I wonder if the blue filter was not seated flat as I just have some bent cardboard washers with black electrical tape holding them down. They are 1mm thick in a 3mm housing so they have 2mm of looseness unless pushed in. I think they are slightly loose but when imaging the angle of the scope no doubt seats them back a bit in the housing - perhaps not! I'll find out next time I use them.






Thanks Frank. I am happy with the BRC/FLI ML8300 combo. I'll be testing out the TEC/ML8300 combo next on galaxies. Not sure what I'll see as both scopes are the same focal length but the BRC is F5 and the TEC is F7. I am expecting the TEC to be sharper but may take a little longer to get there.

Greg.