NGC 6188 in Narrow Band with Atik 11002M

[Hagar]

As usual the only clear nights here seem to be with a big moon. I decided to image NGC6188 using Narrow Band Filters.
Some repositioning of the flattener is required to fix a couple of star problems and a bit of tilt haven't been kind but they are things to work on again.

These are two variations on colour with the NB images.
Scope: RC8 with Takahashi Flattener.
Camera: Atik 11002M Mono camera
Filters: Baader Ha, OIII and SII filters in QHY2" filterwheel.
Subs: 1.5Hrs each colour in 15 minute subs fully calibrated.

[TrevorW]

Nicely done Doug

[renormalised]

Nice shots, Doug. Green one seems to have a bit more zing to it, not quite a sharp looking and feels more natural but the red one is good, though:)

[John Hothersall]

Very nice result and reminds me of The Wall in the North American nebula. I prefer the red version myself.

John.

[strongmanmike]

Ok...what's this narrow band stuff Dougie???? :shrug: thought you didn't like these filters from hell? ;)

Looking good mate, I like'em both :thumbsup:

Mike

[multiweb]

Two very detailed shots Doug. Good stuff. :thumbsup:

[DavidU]

very noice Doug, I really like the green one.

[Hagar]

Thanks for the kind comments Guy's.

Mike. It's all I can do with a big moon wiping out everything else. I am starting to appreciate the detail which can be extracted with the NB filters. At least I didn't just write it off without trial. RGB next time I get some good weather, I promise.

[Ric]

Two very nice images Doug.

I think the green version just has a bit more in it. It seems to jump out and grab your attention.

Cheers

[desler]

Green for me Doug, Can almost feel the texture, nicely done!

Darren

[mill]

Both look very good but the green one does it for me because it shows more/different detail :thumbsup:

[CoolhandJo]

I agree that the detail is very nice. I like Narrowband myself because you can get loads of detail without blowing out things - just like you did!

[TheDecepticon]

Hi Doug,

Love the narrow band. Your starting to do well with your new camera! Top stuff!:thumbsup:

Gray.:D

[Hagar]

Thanks Guy's Warming to the green one a bit myself. It's known as a reverse HST pallet. The detail with NB is the big pick up with these filters and the ability to change the pallet to give best detail is also a big plus when imaging in fairly narrow light bands..

[Bassnut]

Striking, different, excellent detail, top work Doug, a pleasure to view.

[spacezebra]

Very dramatic effect in the red. Brilliant as always Doug.

Cheers Petra d.

[danielsun]

Maybe the green one but it shows the stars a little pinkish but love em both. A bit of curvature there too but still awesome shots with huge detail.:thumbsup:


Cheers Daniel.

[Hagar]

Thanks Fred



Thanks Petra, Sorry I haven't been to the club of late. Work gets in the way each month lately.

[Hagar]

Thanks Daniel, I think I have a problem with all the different connectors to run this big heavy camera and filter wheel on the little RC and am suffering some camera tilt I have to overcome.

[Paul Haese]

Interesting stuff Doug. Did you find any vignetting in the image with this camera and the RC8's narrow rear opening?

This image covers a huge field and I am happy to see that the stars are nice and small too. Think more about the STL11 if this is the case.

[Hagar]

It was an interseting exercise. There was some vignetting but flats controlled it pretty well. I did have some trouble with the OIII flats when using my EL panel and think I will have to give Pete a job to make me a light box for the 8".
I am really impressed with the 11002 chip and it's capabilities. The increase in field of view is about double that of the 8300 CCD.

[Paul Haese]

That sounds great Doug. Perhaps a 35mm sensor is on the cards next, now for the price to drop remarkably. Yeah right.:)

[davewaldo]

Hi Doug, great image! I love how the contrast really emphasises the detail.

It looks to me however that there is quite a bit of aberration off axis...? Is that flattener not doing its job for the large chip?

[Hagar]

The camera had quite a serious tilt as a result of the clamp up connectors and now that I have a serious camera I will be getting some screw together connectors made to suit.

[davewaldo]

Nice :thumbsup:

[Hagar]

I am surprised how well this camera performs and believe me the prices of this chip are dropping quite rapidly. Should be some real bargains in the near future.



Thanks Dave.

[RobF]

I'd missed this one Doug. I love the striking contrast along the edge of the neb cloud in the red one. Was that a bit of Ken Crawford-style selective High Pass masking perhaps? Whatever you've done, we want MORE! :D

[Hagar]

Thanks Rob, lots of selective masking and for once I actually achieved what I set out to achieve.

No more images from me until early Sept when I get back from Qld holidays.

[Octane]

Doug,

Sensational effort. This has been the most difficult object I've encountered thus far. I've never truly been happy with any of my efforts.

I love the red version. : )

H

[Hagar]

Thanks H,,, Not sure which one I like best but I am sure more exposure and a little less fgocal length would improve this image of this hard target.