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Images Section => Deep Sky Images => Topic started by: petevasey on 16:16:34, 07 February, 2018

Title: Sharpless 264 - what a whopper!
Post by: petevasey on 16:16:34, 07 February, 2018
This is my first image of 2018 - into the second month, what rotten weather we had here in NE England.  Mainly cloud, but to add insult to injury, when clear a very bright Moon.

Situated at the top of the main Orion asterism (that's Betelgeuse and Bellatrix at the bottom of the image), Sharpless 264 spans a whopping 6 1/2 degrees.  If one assumes a distance of 1500 light years, that makes it 170 light years across!  I started trying to capture this in December 2017, but was constantly foiled by cloud. Eventually I managed to get some data on 21st. January and the rest on 6th February 2018. QSI683 on Canon 70-200L zoom lens at approximately 85 mm focal length. 13 x 20 minutes H-alpha (for luminance and colour) plus 5 x 20 minutes each OIII and SII. But very little colour in the latter two, so I've used H-alpha in the Red channel. Often known as the 'Alien Face'.

Cheers,

Peter
Title: Re: Sharpless 264 - what a whopper!
Post by: Nimbus on 16:41:28, 07 February, 2018
What a whopper indeed, nice one Peter CS Jim
Title: Re: Sharpless 264 - what a whopper!
Post by: chris.bailey on 17:38:56, 07 February, 2018
Very nicely done. Yep its mahoosive. Too big even for my wide field rig though I got most of it http://ukastroimaging.co.uk/forums/index.php?topic=66302.msg538369#msg538369 (http://ukastroimaging.co.uk/forums/index.php?topic=66302.msg538369#msg538369)

Chris
Title: Re: Sharpless 264 - what a whopper!
Post by: PaulB on 06:25:02, 08 February, 2018
Very nice Angel fish Peter.

The weather during the season has been far from kind.
Title: Re: Sharpless 264 - what a whopper!
Post by: Roger B on 09:23:13, 09 February, 2018
Thats very impressive pete,

An object that isnt always on the hit list.
Rog
Title: Re: Sharpless 264 - what a whopper!
Post by: petevasey on 10:28:33, 09 February, 2018
Thanks everyone.

It's interesting, in particular for this object, that there are so many clouds of gas out there, totally invisible to the naked eye.  How many times over millenia have people looked at Orion, and never seen this despite it's size, or for that matter Barnard's Loop?  It is only with the advent of suitable optics, film and now sensitive detectors that we can actually 'see' these amazing structures.  I doubt if anyone living within such clouds would be aware of them except as perhaps an extremely faint background glow in the sky.

But how many of you have read Fred Hoyle's 'The Black Cloud'?  Pause for thought... ;)

Cheers,

Peter.
Title: Re: Sharpless 264 - what a whopper!
Post by: Einari on 11:07:47, 09 February, 2018
Must put this in my imaging list (next winter I guess).
Have read 'Black cloud'- could/should do it again...
Title: Re: Sharpless 264 - what a whopper!
Post by: Carole on 15:27:03, 09 February, 2018
As you say, what a whopper.  Good work Pete.  I can see a hippos face - face on.

Carole
Title: Re: Sharpless 264 - what a whopper!
Post by: Roger B on 23:43:23, 09 February, 2018
I just looked at this for my widest FOV set up   ts65q & QSI583  it's a 20 pane mosaic,

or with the 110mm triplet & 694 it's 90.  ( and that just fits 100 would be ok)

Just goes to show how big this object is

Rog

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