Colours added: FD H-alpha 18 Sep 2021, First light of ASI1600 with Lunt130MT and comparisons

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H-Alpha
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Colours added: FD H-alpha 18 Sep 2021, First light of ASI1600 with Lunt130MT and comparisons

Post by H-Alpha »

Hi all,

I was happy to receive on Friday my new excellent toy for Full disks: ASI1600MM Pro :-)

Here is the first result with todays sun, by which I am very happy. :-)
Image2021-9-18, Full disk, H-alpha, 18_07_50, UV filter by H- Alpha, on Flickr

By the way, while taking this photo, I had forgotten a UV filter in front of the camera (I was capturing WL just before). Do you know if it can have any improving (I suppose not, since UV is cut earlier by the ERF and/or H-alpha filters) or negative effect in the quality of the capture?

Although not relevant with the sun, yesterday I tried to compare a 8-photo composite of the moon's FD by ASI290MM with a single capture of the moon's FD by ASI1600MM. Although we have quite fewer pixels with ASI1600MM at the final result (size comparison in next photo), I was surprised to see that some details came out even better with ASI1600MM than in the composite photo. :-)
Image2021-9-17, Composite of 8 photos, Lunt130MT, size comparison by H- Alpha, on Flickr
Image2021-9-17, Lunt130MT, quality comparison by H- Alpha, on Flickr,


Hope you will like them and the comparison is useful, since I didn't find a post here, or in other forums, by users of Lunt130MT with ASI1600MM.

Best wishes,
Alexandros
Last edited by H-Alpha on Sun Sep 19, 2021 3:49 pm, edited 1 time in total.


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Re: FD H-alpha 18 Sep 2021, First light of ASI1600 with Lunt130MT and comparisons

Post by DeepSolar64 »

Alexandros,
Your image of the sun looks very similar to the visual view I got today but with greater detail and contrast. The weird thing is that I could visually pick out three small disturbances on the disk that I cannot even see in your image. 🤔

James.


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Re: FD H-alpha 18 Sep 2021, First light of ASI1600 with Lunt130MT and comparisons

Post by H-Alpha »

DeepSolar64 wrote: Sat Sep 18, 2021 10:49 pm Alexandros,
Your image of the sun looks very similar to the visual view I got today but with greater detail and contrast. The weird thing is that I could visually pick out three small disturbances on the disk that I cannot even see in your image. 🤔

James.
Hi James and thanks,

Could it be our time difference? I am UTC+3, and the photo was some 8 hours earlier than this answer to you and roughly also before your post. When did you observe the sun today?

Best wishes,
Alexandros


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Re: FD H-alpha 18 Sep 2021, First light of ASI1600 with Lunt130MT and comparisons

Post by ffellah »

Very nice shots of both the moon and the sun, Alexandros. Have fun with the new camera !

Franco


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Re: FD H-alpha 18 Sep 2021, First light of ASI1600 with Lunt130MT and comparisons

Post by marktownley »

Great shots Alexandros! I think regards the UV/IR filter, try it and see if there is any improvement.

Interesting the difference with the moon shots with the 2 cameras. Were they both taken at the scopes native focal length or did you use a barlow? The moon with the 1600 shows considerably more contrast and detail.


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Re: FD H-alpha 18 Sep 2021, First light of ASI1600 with Lunt130MT and comparisons

Post by EGRAY_OBSERVATORY »

Excellent images Alexandros and interesting comparisons.

Terry


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Re: FD H-alpha 18 Sep 2021, First light of ASI1600 with Lunt130MT and comparisons

Post by Montana »

Excellent comparison, it looks like the new camera is doing just what you want :hamster: fabulous images too :bow

Alexandra


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Re: FD H-alpha 18 Sep 2021, First light of ASI1600 with Lunt130MT and comparisons

Post by H-Alpha »

Thank you James, Franko, Mark, Terry, Alexandra!
marktownley wrote: Sun Sep 19, 2021 6:14 am Great shots Alexandros! I think regards the UV/IR filter, try it and see if there is any improvement.

Interesting the difference with the moon shots with the 2 cameras. Were they both taken at the scopes native focal length or did you use a barlow? The moon with the 1600 shows considerably more contrast and detail.
Both photos taken at native focal length of the scope. No Barlows. My 1.6x Abbe Barlow with the ASI1600 is cutting a small part of the disk with the Lunt130MT.

I played a bit more with the colour presentation of full disks and here are the results:

Image2021-9-18, Full disk, H-alpha, 18_07_50, UV filter by H- Alpha, on Flickr

Image2021-9-18, Full disk, H-alpha, 18_07_50, UV filter, Composition by H- Alpha, on Flickr

Best wishes,
Alexandros


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Lunt 130MT+1800BF, C8 Ultima PEC+AstroSolar, Skywatcher Mount EQ6-R Pro
Baader Solar Prism, ZEISS Abbe Barlow 2x, Celestron Barlow 2x Ultima Series
ZWO ASI290MM, ZWO ASI1600MM Pro,
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