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Integrated Flux Nebula and a couple of old friends


peter shah

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46 minutes ago, peter shah said:

Can't really say this is a shot on M81 and M82, although they are both smack in the centre of the field! Ultra wide field Integrated Flux Nebula around M81 and M82. Imaged from Spain with the 105 sigma Lens and the ZWO2600 OSC, 5hrs total exposure, 300s subs. 

I've also reprocessed my old data set taken with my AG12 from the UK, I merged the two to bring out some colour in 81 and 82

Very impressive. Love the wide angle shot, and only 5 hours of data. I have been looking at the 2600 for some time, it has the Sony IMX571 chip, which seems to be all the rage at moment. I believe the latest Altair cameras use the same chip, and probably a few other companies too.

 

Brian

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1 hour ago, AstronomyUkraine said:

Very impressive. Love the wide angle shot, and only 5 hours of data. I have been looking at the 2600 for some time, it has the Sony IMX571 chip, which seems to be all the rage at moment. I believe the latest Altair cameras use the same chip, and probably a few other companies too.

 

Brian

Yes Brian my 26c has the same chip, I'm am just going to save up now for the Mono version when it comes out as it could revolutionise my imaging time.

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14 minutes ago, Jkulin said:

Yes Brian my 26c has the same chip, I'm am just going to save up now for the Mono version when it comes out as it could revolutionise my imaging time.

It has a pixel size more or less the same as my ZWO 1600, and would have an image scale of .9 with my Esprit, which is perfect. I too would wait for the mono version. Not sure why, but I can't get into OSC imaging, even though it has a lot of advantages over a mono camera.

Edited by AstronomyUkraine
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3 hours ago, peter shah said:

Can't really say this is a shot on M81 and M82, although they are both smack in the centre of the field! Ultra wide field Integrated Flux Nebula around M81 and M82. Imaged from Spain with the 105 sigma Lens and the ZWO2600 OSC, 5hrs total exposure, 300s subs. 

I've also reprocessed my old data set taken with my AG12 from the UK, I merged the two to bring out some colour in 81 and 82

Thanks for looking

Peter Shah

 

lkvRcdB1IHot_16536x0_b9muqi8S.jpg

 

SO6gpMgM10sh_1824x0_n1wMX-gx.jpg

 

Hi Peter, as you know I saw this over on Astrobin first, but it’s worth repeating here, this this is one heck of a superb image. I agree it’s not really about M81/M82, but they certainly give context to what you captured. Great job 👏 

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What an absolutely stunning widefield - the amount of flux nebula that has been captured is nothing short of remarkable - I am seriously looking at this IMX571 sensor as in combination with a fast optical system together this pairing is revolutionising the mainstream image aquistion techniques - I mean all that detail in 5hrs and the depth of image that it gives is breaking the mould that we thought was possible to achieve  with such a relatively short integration - If you had posted that just a year ago I would have thought that was a 20hrs+ project .

Your second combined image is jaw dropping and as discussed in spearate thread the combined FL images results in a view seldom, if ever , seen - as usually M81/M82 is against a relatively black and empty background - but no you have shown galaxies and nebula ( ok flux nebula) can be combined into something so much more - briliant Peter, very inspiring work, thank you for sharing

Bryan

Edited by Astrobdlbug
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15 minutes ago, Dmack1 said:

That widefield is just amazing. Can I ask what processing techniques you used to bring out the faint IFN. 

Thank you......The foundations of the image is so importatnt.....so preparing the images for stacking with good calibration and correction is key to be able to bring out the faint fluff. I do all my pre processing and all of the pre-stretched work in Pixinsight before taking it over to photoshop. There I measure the background levels with the curves tool and make careful stretches to tease out the faint stuff...this needs to be done with small iterations taking care not clip the data.... no black magic required!

11 minutes ago, geoflewis said:

Hi Peter, as you know I saw this over on Astrobin first, but it’s worth repeating here, this this is one heck of a superb image. I agree it’s not really about M81/M82, but they certainly give context to what you captured. Great job 👏 

Thank you Geof....I agree its all about the FOV and is more to it than the obvious galaxies. i think the fact M81 and 82 are there places them nicely in the sky......its amazing to me.

 

1 hour ago, Gina said:

Two beautiful images - you've excelled again Peter 👍👍

Thank you Gina... I do like this little 105 lens and camera combo....its a little photon hoover

 

2 hours ago, AstronomyUkraine said:

Very impressive. Love the wide angle shot, and only 5 hours of data. I have been looking at the 2600 for some time, it has the Sony IMX571 chip, which seems to be all the rage at moment. I believe the latest Altair cameras use the same chip, and probably a few other companies too.

 

Brian

Its such a sensitive camera...the beauty about Cmos is short subs and a fraction of the noise...this allows you to do lots of short dithered subs and take advantage of rejection algorithms when stacking, further lowering the noise floor! The disadvantage is the disk space an processing power needed....

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17 minutes ago, Astrobdlbug said:

What an absolutely stunning widefield - the amount of flux nebula that has been captured is nothing short of remarkable - I am seriously looking at this IMX571 sensor as in combination with a fast optical system together this pairing is revolutionising the mainstream image aquistion techniques - I mean all that detail in 5hrs and the depth of image that it gives is breaking the mould that we thought was possible to achieve  with such a relatively short integration - If you had posted that just a year ago I would have thought that was a 20hrs+ project .

Your second combined image is jaw dropping and as discussed in spearate thread the combined FL images results in a view seldom, if ever , seen - as usually M81/M82 is against a relatively black and empty background - but no you have shown galaxies and nebula ( ok flux nebula) can be combined into something so much more - briliant Peter, very inspiring work, thank you for sharing

Bryan

Thank you Bryan....I have to agree Cmos is amazing.....short subs with the fraction of the noise of a CCD is quite remarkable.

To be honest the image that blew me away completely and made me realise that Cmos has changed how imaging is done was  when I processed my "1hr 40mins " exposure of the Large Molecular Cloud....I still cant believe how much data was in it!!! 

Here it is ....a whopping 1hr 40mins all made up from 300s unguided subs!... Same set up as M81/82

NKYs8QjnG_MB_1824x0_Yj9Sel4c.jpg

 

 

Edited by peter shah
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20 minutes ago, peter shah said:

Its such a sensitive camera...the beauty about Cmos is short subs and a fraction of the noise...this allows you to do lots of short dithered subs and take advantage of rejection algorithms when stacking, further lowering the noise floor! The disadvantage is the disk space an processing power needed....

I see that ZWO are bringing out a mono version of this camera in late February. Judging the quality of the OSC images, it seems a fair bet that I will be ordering one.

 

Brian

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Stunning images and clear testament to the new generation of Cmos sensors and your skill at extracting the faint detail, terrific. Thanks for sharing. 

With these next generation Cmos camera’s there is hope for us sky starved imagers in the U.K. and Northern Europe.

 

 

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10 hours ago, peter shah said:

no black magic required!

Oh that's a real pity - I was rather looking forward to dancing naked round my scope at midnight sprinkling some chicken blood around. 🤣

 

Thats even more incredible for just being done with curves - I have tried to follow Scott Rosens - method which uses "Screen Mask Invert" with middling results. 

 

I have a brand new ASI2600mc Pro sitting on my bench laughing at me while I wait for a clear sky and your images are simply cranking up the torture level!!

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49 minutes ago, Dmack1 said:

Oh that's a real pity - I was rather looking forward to dancing naked round my scope at midnight sprinkling some chicken blood around. 🤣

 

Thats even more incredible for just being done with curves - I have tried to follow Scott Rosens - method which uses "Screen Mask Invert" with middling results. 

 

I have a brand new ASI2600mc Pro sitting on my bench laughing at me while I wait for a clear sky and your images are simply cranking up the torture level!!

Sorry my rather simplified answer was a bit misleading,  its not just curves... Its quite a lengthy process TBH....there is masking  but primarily curves with no masking at first to get the initial separation.

The ASI2600 is stunning....you will have the last laugh.

Edited by peter shah
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1 hour ago, Padraic M said:

That's phenomenal Peter! Only learned about IFN recently and now I find out it'severywhere! Well done for bringing it out so well in both of the images above.

It really is all over....you tend to find it more around  galaxy season as the views are generally looking out of the Milky Way's spiral arms. The IFN sits in the outer edges of our galaxy so its easier to find when looking out and away from the the Milky Way

1 hour ago, MartinS said:

Stunning images and clear testament to the new generation of Cmos sensors and your skill at extracting the faint detail, terrific. Thanks for sharing. 

With these next generation Cmos camera’s there is hope for us sky starved imagers in the U.K. and Northern Europe.

 

 

I'm converted....it was a difficult transition for me using CCD for many years

 

4 hours ago, TerryMcK said:

All those images are astonishing Peter.

Thank you very much

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