The Dark Tower in scorpius with ED80?QHY8

[seeker372011 (Narayan)]

This is a challenging object for an ED80..the first time I attempted it I gave up because no amount of screen stretching showed the slightest hint of nebulosity.

I tried it again last weekend, extending the subframe duration and total exposure.


details

scope: ED 80
Mount:CG5 (autoguided)
Filter: Baader H Alpha (7nm)
camera :QHY8
Exposure: 20 minutes x 10
Capture:Nebulosity
Processing:Nebulosity/Photoshop
larger image:

http://www.flickr.com/photos/9178472...89527/sizes/l/

thanks for looking, comments and feedback most appreciated

this object is not often imaged-though Paul Mayo recently did post a fine image of this object (with 3 minute subs! thanks to his 12.5 inch aperture). In fact apart from Paul's image-I can find only three others on the web-Robert Gendler's APOD, John Gleason's superb H Alpha rendering and Eddie Trimarchi's excellent H alpha image.
Its challenging target but a wonderful region.
Narayan

[Astrod00d]

That's a challenging object indeed, very well captured! I tried the same object a few weeks ago and got nothing but noise. H Alpha really brings it out. Congratulations on a job well done!

Cheers,

Rob

[Alchemy (Clive)]

Narayan lots of detail there, as its in Black and white and a small thumbnail was this Binned 4x4 to increase sensitivity?

[leon]

Narayan, gee that is some exposure length, and it has paid off, well done, it is a fine image.

Leon

[Ric]

A great capture Narayan, you've done a fine job with this one.

Good detail on a tricky subject.

Cheers

[Garyh]

Nice work Narayan!
This is going to be one of my next targets to image when the skies clear!
Richardo did this a month or two back with his 10" newt and came out rather nice too!
cheers

[seeker372011 (Narayan)]

Originally Posted by Alchemy

Narayan lots of detail there, as its in Black and white and a small thumbnail was this Binned 4x4 to increase sensitivity?

No I shot at full res-ie 1 x 1- but resized for posting on Flickr and of course here

Narayan

[gbeal]

I am keen to try this as well, but am a little confused with the exact area. Am I correct in assuming the ED80 is about 600mm focal length, and is there anything in the area to help guide me to this weird looking object.
Great shot.

[seeker372011 (Narayan)]

Originally Posted by gbeal

I am keen to try this as well, but am a little confused with the exact area. Am I correct in assuming the ED80 is about 600mm focal length, and is there anything in the area to help guide me to this weird looking object.
Great shot.

I forgot to mention I used a William Optics 0.8 reducer in the optical train, so I guess its closer to 480mm

the Dark Tower is centred at RA 16 47 37 Dec -41 15 09

here is my image located in google maps

http://explore.astrometry.net/?zoom=...00806/92298412

Narayan