New Image: M81 and co

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New Image: M81 and co

#1

Post by Gmetric »


This is just two hours with the Nikon d5300 @ iso 200 on M81, M82 and the Garland Galaxy. I've been sooooooo busy that I've had no time to do anything other than work recently; I've not had a day off in 40 days. This month should be a bit easier so I'll have a few days off, thank God! Anyway, I hope you all like it :)
M81 and M82 FP small.jpg
Arry (Bortle 7 area)

Telescopes: Sky-Watcher ED72II, Sky-Watcher PDS130, Sky-Explorer SN F4 200mm astrograph and Vixen F11.1 90mm
Cameras: Nikon D5300 modded, Canon Kiss X8i modded, Cooled Canon kiss X4 modded, Atik 16IC and 383 colour, ASI120MC, QHY5LII
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Re: New Image: M81 and co

#2

Post by Juno16 »


Hi G!
That is really an amazing image for just two hours!
Hopefully you will get more time on it soon.
Very nice processing!
Jim

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Re: New Image: M81 and co

#3

Post by Makuser »


Hi Arry. Well this was a well spent 2 hours. This image has excellent contrast and is well framed. M81 ( NGC 3031 and Bode's Galaxy) has very nice spiral arms details, M82 (NGC 3034 and Cigar Galaxy) shows it's central fracture, and Garland Galaxy (NGC 3077) is quite visible too. Thanks for sharing this great work with us on here Arry and I hope that you can get a break from work sometime soon.
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Re: New Image: M81 and co

#4

Post by Gmetric »


Juno16 wrote: Tue Mar 07, 2023 5:21 pm Hi G!
That is really an amazing image for just two hours!
Hopefully you will get more time on it soon.
Very nice processing!
I hope so too. I'll be back on a regular schedule this month so with good fortune and clear skies I can add to it or go for something else. Many thanks, Jim.
Arry (Bortle 7 area)

Telescopes: Sky-Watcher ED72II, Sky-Watcher PDS130, Sky-Explorer SN F4 200mm astrograph and Vixen F11.1 90mm
Cameras: Nikon D5300 modded, Canon Kiss X8i modded, Cooled Canon kiss X4 modded, Atik 16IC and 383 colour, ASI120MC, QHY5LII
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Re: New Image: M81 and co

#5

Post by Gmetric »


Makuser wrote: Tue Mar 07, 2023 9:51 pm Hi Arry. Well this was a well spent 2 hours. This image has excellent contrast and is well framed. M81 ( NGC 3031 and Bode's Galaxy) has very nice spiral arms details, M82 (NGC 3034 and Cigar Galaxy) shows it's central fracture, and Garland Galaxy (NGC 3077) is quite visible too. Thanks for sharing this great work with us on here Arry and I hope that you can get a break from work sometime soon.
Thank you, Marshall.
Arry (Bortle 7 area)

Telescopes: Sky-Watcher ED72II, Sky-Watcher PDS130, Sky-Explorer SN F4 200mm astrograph and Vixen F11.1 90mm
Cameras: Nikon D5300 modded, Canon Kiss X8i modded, Cooled Canon kiss X4 modded, Atik 16IC and 383 colour, ASI120MC, QHY5LII
Mount: Sky-Explorer HEQ 5 belt driven
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Re: New Image: M81 and co

#6

Post by AstroBee »


Great shot Arry. I am curious though why you limited yourself to ISO200? Surely the D5300 can handle ISO400-800? Especially if you bother with calibration frames.
Greg M.~ "Ad Astra per Aspera"
Scopes: Celestron EdgeHD14", Explore Scientific ED152CF & ED127 APO's, StellarVue SV70T, Classic Orange-Tube C-8, Lunt 80mm Ha double-stack solar scope.
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Re: New Image: M81 and co

#7

Post by messier 111 »


very very nice take , thx .
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Re: New Image: M81 and co

#8

Post by Gmetric »


AstroBee wrote: Wed Mar 08, 2023 12:54 am Great shot Arry. I am curious though why you limited yourself to ISO200? Surely the D5300 can handle ISO400-800? Especially if you bother with calibration frames.
Hi Greg, thanks for the question. In terms of dynamic range and according to this site http://dslr-astrophotography.com/iso-va ... n-cameras/ the sweet spot is ISO200 for the D5300. However, I do use ISO400 and 800 with good results too, especially with calibration files :) Many thanks
Arry (Bortle 7 area)

Telescopes: Sky-Watcher ED72II, Sky-Watcher PDS130, Sky-Explorer SN F4 200mm astrograph and Vixen F11.1 90mm
Cameras: Nikon D5300 modded, Canon Kiss X8i modded, Cooled Canon kiss X4 modded, Atik 16IC and 383 colour, ASI120MC, QHY5LII
Mount: Sky-Explorer HEQ 5 belt driven
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Re: New Image: M81 and co

#9

Post by Gmetric »


messier 111 wrote: Wed Mar 08, 2023 1:22 am very very nice take , thx .
Thanks, Jean-Yves :)
Arry (Bortle 7 area)

Telescopes: Sky-Watcher ED72II, Sky-Watcher PDS130, Sky-Explorer SN F4 200mm astrograph and Vixen F11.1 90mm
Cameras: Nikon D5300 modded, Canon Kiss X8i modded, Cooled Canon kiss X4 modded, Atik 16IC and 383 colour, ASI120MC, QHY5LII
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Re: New Image: M81 and co

#10

Post by AstroBee »


Gmetric wrote: Wed Mar 08, 2023 2:34 am
AstroBee wrote: Wed Mar 08, 2023 12:54 am Great shot Arry. I am curious though why you limited yourself to ISO200? Surely the D5300 can handle ISO400-800? Especially if you bother with calibration frames.
Hi Greg, thanks for the question. In terms of dynamic range and according to this site http://dslr-astrophotography.com/iso-va ... n-cameras/ the sweet spot is ISO200 for the D5300. However, I do use ISO400 and 800 with good results too, especially with calibration files :) Many thanks
Your calibration frames MUST be shot at the same ISO as your LIGHTS.
Greg M.~ "Ad Astra per Aspera"
Scopes: Celestron EdgeHD14", Explore Scientific ED152CF & ED127 APO's, StellarVue SV70T, Classic Orange-Tube C-8, Lunt 80mm Ha double-stack solar scope.
Mounts: Astro-Physics Mach One, iOptron CEM70EC Mount, iOptron ZEQ25 Mount.
Cameras: ZWO ASI2600mm Pro, ZWO 2600MC Pro, ZWO ASI1600mm
Filters: 36mm Chroma LRGB & 3nm Ha, OIII, SII, L-Pro, L-eXtreme
Eyepieces: 27mm TeleVue Panoptic, 4mm TeleVue Radian, Explore Scientific 82° 30mm, 6.7mm , Baader 13mm Hyperion, Explore Scientific 70° 10mm, 15mm, 20mm, Meade 8.8mm UWA
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Re: New Image: M81 and co

#11

Post by Mac »


Very nice capture Arry
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Re: New Image: M81 and co

#12

Post by MariusD69 »


Wonderful image! Great work!
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Re: New Image: M81 and co

#13

Post by Gmetric »


AstroBee wrote: Wed Mar 08, 2023 2:39 am
Gmetric wrote: Wed Mar 08, 2023 2:34 am
AstroBee wrote: Wed Mar 08, 2023 12:54 am Great shot Arry. I am curious though why you limited yourself to ISO200? Surely the D5300 can handle ISO400-800? Especially if you bother with calibration frames.
Hi Greg, thanks for the question. In terms of dynamic range and according to this site http://dslr-astrophotography.com/iso-va ... n-cameras/ the sweet spot is ISO200 for the D5300. However, I do use ISO400 and 800 with good results too, especially with calibration files :) Many thanks
Your calibration frames MUST be shot at the same ISO as your LIGHTS.
I know, and of course, when doing calibration frames I do them at the same iso, temperature and exposure time as the lights. Except of course for bias which are done with the same iso and if possible temperature but at the fastest shutter speed as we are only establishing the dark fixed patter noise. And dark flats which should be done at the same exposure as the flats. But thanks for pointing that out. Much appreciated.
Last edited by Gmetric on Wed Mar 08, 2023 7:34 am, edited 1 time in total.
Arry (Bortle 7 area)

Telescopes: Sky-Watcher ED72II, Sky-Watcher PDS130, Sky-Explorer SN F4 200mm astrograph and Vixen F11.1 90mm
Cameras: Nikon D5300 modded, Canon Kiss X8i modded, Cooled Canon kiss X4 modded, Atik 16IC and 383 colour, ASI120MC, QHY5LII
Mount: Sky-Explorer HEQ 5 belt driven
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Re: New Image: M81 and co

#14

Post by Gmetric »


Mac wrote: Wed Mar 08, 2023 3:00 am Very nice capture Arry
Thank you, Steve :)
Arry (Bortle 7 area)

Telescopes: Sky-Watcher ED72II, Sky-Watcher PDS130, Sky-Explorer SN F4 200mm astrograph and Vixen F11.1 90mm
Cameras: Nikon D5300 modded, Canon Kiss X8i modded, Cooled Canon kiss X4 modded, Atik 16IC and 383 colour, ASI120MC, QHY5LII
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Re: New Image: M81 and co

#15

Post by Gmetric »


MariusD69 wrote: Wed Mar 08, 2023 6:15 am Wonderful image! Great work!
Thank you, Marius :)
Arry (Bortle 7 area)

Telescopes: Sky-Watcher ED72II, Sky-Watcher PDS130, Sky-Explorer SN F4 200mm astrograph and Vixen F11.1 90mm
Cameras: Nikon D5300 modded, Canon Kiss X8i modded, Cooled Canon kiss X4 modded, Atik 16IC and 383 colour, ASI120MC, QHY5LII
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Re: New Image: M81 and co

#16

Post by Butterfly Maiden »


Great image Arry.

Work always seems to interfere with our hobbies, but do the best you can and enjoy your free times :icon-smile:
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Re: New Image: M81 and co

#17

Post by Gmetric »


Butterfly Maiden wrote: Wed Mar 08, 2023 7:07 am Great image Arry.

Work always seems to interfere with our hobbies, but do the best you can and enjoy your free times :icon-smile:
It sure does and I will, and…thank you, Vanessa :)
Arry (Bortle 7 area)

Telescopes: Sky-Watcher ED72II, Sky-Watcher PDS130, Sky-Explorer SN F4 200mm astrograph and Vixen F11.1 90mm
Cameras: Nikon D5300 modded, Canon Kiss X8i modded, Cooled Canon kiss X4 modded, Atik 16IC and 383 colour, ASI120MC, QHY5LII
Mount: Sky-Explorer HEQ 5 belt driven
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Re: New Image: M81 and co

#18

Post by Jockinireland »


Thats a really excellent image. Especially at only 2 hours. You have lovely coulour and structure in both Galaxies. Nicely done.
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Re: New Image: M81 and co

#19

Post by Gmetric »


Jockinireland wrote: Wed Mar 08, 2023 8:59 am Thats a really excellent image. Especially at only 2 hours. You have lovely coulour and structure in both Galaxies. Nicely done.
Thank you, David. Much appreciated.
Arry (Bortle 7 area)

Telescopes: Sky-Watcher ED72II, Sky-Watcher PDS130, Sky-Explorer SN F4 200mm astrograph and Vixen F11.1 90mm
Cameras: Nikon D5300 modded, Canon Kiss X8i modded, Cooled Canon kiss X4 modded, Atik 16IC and 383 colour, ASI120MC, QHY5LII
Mount: Sky-Explorer HEQ 5 belt driven
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