M101 - The PinWheel Galaxy

[AbsolutelyN]

I found this one tricky in both capture and processing and didn't get as much data as I hoped but hopefully its come out ok. Hope I've not gone over board with noise reduction. 

250-PDS, ZWO 1600MM - 4.7 hours. 

https://www.astrobin.com/0ierjp/?nc=user

 

 

 

Edited April 12, 2021 by AbsolutelyN

[callisto]

Thats amazing 😮

[tooth_dr]

I agree that’s amazing. Can’t beat a bit of aperture 

[AbsolutelyN]

3 minutes ago, tooth_dr said:

I agree that’s amazing. Can’t beat a bit of aperture 

Thanks Adam - an aperture mask also helps 🙂 

Edited April 12, 2021 by AbsolutelyN

[tooth_dr]

1 hour ago, AbsolutelyN said:

Thanks Adam - an aperture mask also helps 🙂 

Lol not as much as that!  Would you mind posting a photo of it fitted?  Do you think I wound benefit from one too?

[AbsolutelyN]

5 minutes ago, tooth_dr said:

Lol not as much as that!  Would you mind posting a photo of it fitted?  Do you think I wound benefit from one too?

Sure - I just used three very small pieces of velcro to attach it to the mirror clips. It's centred as best I could manage. Makes a big difference as I had flare radiating out of bright stars. There is still a bit but its nothing in comparison. 

Flare from your 250 didn't look anywhere near as bad from the image you posted last night so not sure but probably worth a try as might tidy them up a bit. Have you flocked the inside of the tube? The top half of mine is flocked, might help with that strange bit of flare perhaps? 

 

[gorann]

Agree, a lovely M101!

[GiorgioF]

Amazing one! What gain did you set for it? The amount of details is wonderful

[Stuf1978]

Stunning M101, great work  

[AbsolutelyN]

6 hours ago, GiorgioF said:

Amazing one! What gain did you set for it? The amount of details is wonderful

Thanks - it's just unity gain and 1 min exposures. 

[mackiedlm]

Thats a fantastic image. I always find this a really difficult target to do justice on but this is right on point!

[AbsolutelyN]

5 hours ago, mackiedlm said:

Thats a fantastic image. I always find this a really difficult target to do justice on but this is right on point!

Thanks, it was difficult to both capture and process, it has very bright areas and also very faint areas making it a tough target despite its size.