Simeis 147 Ha

[ChrisLX200]

Well almost... it seems no matter how big the sensor there is always something that won't quite fit on it, in this case the ancient supernova remnant Simeis 147. This is an apparent very large object (3 degrees diameter, or 6 full moons across) so is normally tackled using CCD plus a camera lens, here I;ve tried to squeeze what I can onto the chip using my NP127is. Didn't quite make it, and I'm thinking I will try the 0.7 focal reducer but not at all confident it won;t vignette dreadfully.

Scope: Televue NP127is @ 660mm f/l

CCD: Moravian G4-16000 @ 1x1

Mount: 10-Micron GM2000HPS

Guide: unguided

Filters: Chroma 3nM Ha

Data: 8 x 1800s

ChrisH

[wavydavy]

Great image Chris.......thanks for posting!

[Ibbo!]

very nice

I would love to have a go at this but I will struugle with FOV

[wxsatuser]

Well worth  missing bits for the excellent detail.

[swag72]

This is so on my target list and every year I say I'm going to have a bash at it! This is great! But if it won't fit on your sensor then I'm afraid there's little hope for the rest of us! Is it going to stay mono or do you have colour plans?

[toxic]

great image Chris very fine indeed

[Martin-Devon]

Although it doesn't quite fit across your mega-sized sensor, it still looks really good, with excellent detail & resolution. Will be interested to see how this big chip handles data with a reducer in the imaging train. 

[matt-c]

Great job that looks amazing

[laudropb]

Very nice image. So much detail to take in. Thanks for sharing.

[Stu]

What a beautiful object Chris, never heard of or seen it before. Time for a mosaic perhaps?

[Freddie]

Very nice with lots of fine detail. It's like a giant sized version of my NGC7094.

[MarsG76]

Great image, I like the delicate detail, almost spider web like feel to it...

[ChrisLX200]

This is so on my target list and every year I say I'm going to have a bash at it! This is great! But if it won't fit on your sensor then I'm afraid there's little hope for the rest of us! Is it going to stay mono or do you have colour plans?

Thanks Sara, I thought about it last year but the thought of a 6 x 6 mosaic put me off! There is OIII in this but mostly around the periphery so it's not going to be worth it on this set. If I can get the reducer working then yes, otherwise I need a shorter f/l scope that provides a flat field out to a minimum 52mm diameter... I wish I'd bought the Canon bayonet adapter for the camera now ;-)

ChrisH

[ChrisLX200]

What a beautiful object Chris, never heard of or seen it before. Time for a mosaic perhaps?

 You said the 'M' word      No way LOL!

ChrisH

[Stu]

You said the 'M' word No way LOL!

ChrisH

Funny [emoji3][emoji3]

[ChrisLX200]

Wow, so many more comments! A collective big ThankYou to you all for looking :-)

ChrisH

[DanL]

Definitely a 'wow' image. 1800s unguided subs? Definitely a 'wow' mount!

[ollypenrice]

Oh no, I can't say it a third time, can I!!!

You need a mos....   quito net!  (I chickened out...)

Great object and nice capture.

Try M57. That'll fit on the chip.     

Olly

[ollypenrice]

PS, you don't need much colour for Simeis 147 and no luminance unless you want dusty background sky details. Just a bit of star colour, based on an effort I did with a camera lens.

Olly

[cfpendock]

That's very very good.  If you use the reducer, won't flats get rid of any vignetting?

Chris

[riklaunim]

I would love to have a go at this but I will struugle with FOV

To fit that on Atik 314L+ I had to use 100mm lens