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First DSO image I am really quite happy with


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Cygnus Wall shot with my Esprit and an Optolong L Extreme dual band filter.

6h 5m of integration time. Stacked and processed in SiriL (I LOVE SiriL!!)

35 sec subs, unguided

i should add, this is light frames only. I don’t shoot calibration frames any more.

Cygnus wall with L Extreme dual band filter.jpg

Edited by StuartT
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This is great! Really sharp and lots of detail. One to print and hang on the wall? A bit of walking noise is evident, dithering would fix that.

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10 hours ago, Lee_P said:

This is great! Really sharp and lots of detail. One to print and hang on the wall? A bit of walking noise is evident, dithering would fix that.

thanks. Actually my son asked for this image so he can print it and display it in his house. I guess it's only fair, given I put up lots of his macaroni pictures in my house many years ago 🤣

Dithering would require guiding AFAIK. I can't be bothered with that faff 

Edited by StuartT
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Lovely. Gives me hope yet! :) The image stands being zoomed in too. Nice and sharp. I think the wall stands on its own as an image. I hope you don’t mind my cropping it as demonstration. 
 

3CF09352-0DCD-4B64-B12F-DD32D970B362.jpeg

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42 minutes ago, The Admiral said:

I didn't read it like that, I thought the total integration time was 6h 05m. Sub length not mentioned.

Ian

Well actually, you are probably correct, sorry my mistake, now you pointed it out I agree with you….👍🏼

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23 hours ago, The Admiral said:

That is rather nice! Quite ethereal. Was that taken from Oxford or did you travel to a darker location?

What exposures were you using?

Ian

Thanks. 
 

this was shot from my back garden in Oxford city. The L extreme filter cuts out all light pollution.

my subs are 35sec. That is the longest I can go without guiding and still get round stars.

Edited by StuartT
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On 15/10/2021 at 19:52, StuartT said:

6h 5m of integration time. Stacked and processed in SiriL (I LOVE SiriL!!)

Glad you’re liking Siril. It’s a hidden gem for those of us that just want to be able to ‘get stuff stacked and processed’ 😊

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4 hours ago, Sunshine said:

This is your first DSO image? am i reading correctly? this is what I would call starting of with a bang! this is impressive.

Sorry, no. I meant it’s the first one I’m really pleased with. Poor English on my part.

it’s actually my fourth DSO. I started out with astrophotography in august.

 

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8 minutes ago, StuartT said:

it’s actually my fourth DSO. I started out with astrophotography in august.

You nailed it this time!

It is very beautiful. You have really got the details and edges sharp.

6 hours integration time @ 35sec subs would be over 600 light frames @ 50MB each!!?!? 

 

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13 hours ago, MHaneferd said:

You nailed it this time!

It is very beautiful. You have really got the details and edges sharp.

6 hours integration time @ 35sec subs would be over 600 light frames @ 50MB each!!?!? 

 

Yep. 628 subs. I think they are 55MB each. But I don’t tend to keep them all once I’ve stacked them

12 hours ago, Dazzyt66 said:

Just out of interest @StuartT, over how long a period did this take in real time?

Three nights. Two hour sessions each night

10 hours ago, The Lazy Astronomer said:

I was just thinking that - the CPU must've had a hell of a job stacking them all!!

Not really. With SiriL it takes about 15 min. It’s a wonderful program

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That's a terrific image Stuart and just shows what can be done with the evolving meta these days: short subs, no guiding, no calibration frames, urban skies...

Really impressive.

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