Fourth Light Remote Autonomous Setup - NGC6888 Crescent - 35hrs

[jjongmans]

This is our (together with with Yves, 'vdb' on SGL) fourth light of our robotic remote setup. This time a nice narrowband object, The Crescent Nebula. This image is a combination of 6 channels; Hydrogen-alpha, Oxygen-III, Sulfur-II and RGB for correct star color. We spent 35 hours on this object, that's our record for now. Seeing fluctuated during the 8 days we images this object, it was between 2" and 5".

2014/07/17, 2014/07/16, 2014/07/15, 2014/07/14, 2014/07/12, 2014/07/10, 2014/07/09, 2014/06/27

1686.32 mm @ f/6.64

0.661 "/pixel

FOV 36' 0.5" x 27' 10.8"

21.50 mag/arcsecond2

Guiding rms 0.3"

-20°C

35 hrs:

12x 300 sec. RGB stars unbinned

21x 1800 sec. hydrogen-α unbinned

24x 1800 sec. oxygen-III unbinned

19x 1800 sec. sulfur-II unbinned

Software: ACP Observatory Control Software, ACP Scheduler and Maxim DL, Auto-guiding with Maxim DL, Auto-focusing with FocusMax, PixInsight, Adobe Photoshop CS6

More details

[truenature]

amazing     print it big and hang it.

I would love to get into filter but not sure if dslr will work unless moded?

cheers

j

[alan potts]

Err Wow, what a shot. Excellent work.

[ollypenrice]

Well done guys. Resolution, depth, colour...

Olly

[ultranova]

Holly molly thats a corker, time well spent I thinks

well done chaps

Paul

[Gedan]

Wow!

[laser_jock99]

Stunning work.

[PhotoGav]

Yes, that's really rather good. Time most definitely well spent. I particularly like the colour result from mixing RGB and narrowband data. Please can you elaborate on how you have done this - which channels have what data? I presume that you have made an RGB layer of the stars and added it with blend mode 'colour'?

This definitely proves that time with the shutter open is our best friend when it comes to creating stunning images.

What's next for the Robo-Scope?

[vdb]

My version of the same data;

/Yves

[Mick J]

Brilliant jjongmans and Yves,   35 hours wow.  I have 2 browsers open, one on jjongmans picture, one Yves - flicking back and forth, and this is on a laptop, note to self: repeat with larger screen later.   What a productive back garden Olly has.

[ollypenrice]

Brilliant jjongmans and Yves,   35 hours wow.  I have 2 browsers open, one on jjongmans picture, one Yves - flicking back and forth, and this is on a laptop, note to self: repeat with larger screen later.   What a productive back garden Olly has.

Monique's potatoes are delicious... 

I love Yves' rendition as well. The differences (like whether or not to use NR and the balancing of colour) lie at the heart of of many debates in AP and give each person their own style. In this case I'm happy to sit on my garden fence!

Olly

[iksose7]

Excellent images both of you, i dare not even try to chose between them! Great processing on both versions, nice work.

[PNJ]

brill, to see the outer outer shell is fab, well done

paul j

[pietervdv]

Very nice work guys. When I take a close look at the first full size version; there is a very small grain background noise present? I would have thought the

very long exposures would have removed all the background noise? Or was this artificially introduced during the processing?

Pieter

[vdb]

And a V2 version:

[RobH]

Stunning work. I'm shooting this target too, and you're a hard act to follow, especially from such a dark site....great...I love a challenge :-)

What scope and camera?

[vdb]

Thanks,

The setup is an ODK 10 inch with QSI 683 LRGB + 3nm NB filters, on a mesu mount.

/Yves

[RobH]

Thanks Yves.....those 3nm filters are the way to go I think, just darned expensive!!!