Eagle, Omega, SH2-54 and Others

[Knight of Clear Skies]

Here's another image from my week in Cornwall, taken in September at Caradon Observatory, the Eagle & Omega Nebulae along with the often overlooked Sh2-54 at the top of the image. There are a few more Sharpless objects scattered throughout the frame and M25 is at bottom left. Does anyone know the name of the dark 'fish' at middle left please?

It's slightly under an hour of exposures in total with the Samyang 135mm f2 on my modded 1100D and 12nm Ha filter, using 2 minute unguided subs. After that the edge of frame started a catch a tree. Here's a closer crop of the brighter nebulae.

Stellarium lists a number of large objects at bottom right, including IC4701, Sh2-44 and Sh2-41 but they seem to merge into each other . Viewing at full size, I can just make out the pillars of creation with this camera/lens combination but can't see the Eagle shape, I might try a drizzle stack if I can set a region of interest. I'm surprised at how many features I can match up with Sara's stunning image.

I stacked this using DSS's super pixel mode which I think is the correct setting for DSLR narrowband, and then processed (erratically) in a mixture of StarTools and Photoshop, including Noel's actions.

While I was waiting for it to get fully dark I also had a quick go at the NA and Pelican.

This was just 22 minutes. I suspect the filamentary structures just showing at top left are some kind of supernova remnant. Here's a wider shot from last year that shows the area in context, taken with an old 35mm f2.4 lens.

Hope you like them, the Samyang 135mm is proving to be a beast of a lens even with a DSLR. I should be able to get even better results with my 1600MM cool.

[Allinthehead]

That's a great set. Nicely done. The Samyang and the asi are a nice combo so plenty to look forward to from you.

[MarsG76]

Great Images..... nice work

 

[wxsatuser]

Great selection.

The 'dark fish', a guess, it's open space and has'nt got a name although there are several LDN's around there.

[ollypenrice]

Tremendous images. I love the casade of nebulae including the Eagle, Swan, etc in portrait format and the Cygnus image, likewise, frames the NAN-Sadr extended complex with wonderful coherence. It appears as a single vast object, which is probably what it really is.

Olly

[Filroden]

Those are stunning. Lovely to see the nebula within the wider context.

[StargeezerTim]

Beautiful images...

How did you get focus? I have a hunch that I would see nothing on live view with the Ha filter installed!

 

[Knight of Clear Skies]

On 10/10/2017 at 08:34, ollypenrice said:

Tremendous images. I love the casade of nebulae including the Eagle, Swan, etc in portrait format and the Cygnus image, likewise, frames the NAN-Sadr extended complex with wonderful coherence.

Olly

Thanks Olly. I'm really pleased with how the framing turned out but I can't claim it was carefully planned, I had a great deal of trouble landing on target. Normally I'd star-hop by looking through the camera eye piece but that's not possible with the Ha filter in place.

On 10/10/2017 at 08:51, Filroden said:

Those are stunning. Lovely to see the nebula within the wider context.

Thanks, that's what I was aiming for.

On 10/10/2017 at 16:26, StargeezerTim said:

Beautiful images...

How did you get focus? I have a hunch that I would see nothing on live view with the Ha filter installed!

I focused on a light on the horizon to begin with, and double checked it with a Bahtinov mask on a bright star.

[Rodd]

Ditto on all.  Amazing.  But I don't think the fish is empty space--I think its a dark structure in front of the nebula.  If what I think you refer to is what you refer to.

Rodd

[Knight of Clear Skies]

19 hours ago, Rodd said:

But I don't think the fish is empty space--I think its a dark structure in front of the nebula.  If what I think you refer to is what you refer to.

Yes, dark patches across the Milky Way are certainly dark nebulae rather than an absence of stars. I found it with a bit of searching, it's catalogued as Barnard 312 and LDN 379.

[pietervdv]

Very nice! Looks like it came straight from Barnard's Milky way atlas.

Pieter