Our Sun

A place to share images that you have taken with SharpCap.
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Please upload large images to photo sharing sites (flickr, etc) rather than trying to upload them as forum attachments.

Please share the equipment used and if possible camera settings to help others.
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CarlGreen
Posts: 43
Joined: Sat Feb 13, 2021 9:06 am
Location: England (Northamptonshire)

Our Sun

#1

Post by CarlGreen »

Image taken last Sunday.
ZWO ASI120MM Mini, Gain=43, Exposure=0.2700ms, Skywatcher EQ8 and Lunt60 Tha with B1200 Diagonal.
Stacked in AS4 and Processed in ImPPG with final colour and processing in Afinity Photo.
Quite happy with final Image, but room for improvement and any tips welcome 🙂
Have been using Sharpcap for Solar Tracking and Solar Mosaic planning and very pleased with how it all works.
Hope you like it. 👍
Attachments
FinishedFullDisk.jpg
FinishedFullDisk.jpg (916.85 KiB) Viewed 429 times
Celestron 9.25 - Altair 155 f8
GoTo Evolution Alt-Az Mount - Eq8
Starsense Explorer
Celestron Focus Motor
QHY5iii462C / Skyris 132M / ZWO ASI294MC Pro
Celestron f6.3 Focal Reducer
Windows 10 Home Edition
I5 - 825OU CPU - 180 Ghz, 8GB RAM
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Menno555
Posts: 1086
Joined: Mon Apr 20, 2020 2:19 pm
Location: The Netherlands
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Re: Our Sun

#2

Post by Menno555 »

No tips, I don't have experience with solar.
I do like the capture and processing though! Very detailed :)

Menno
timh
Posts: 538
Joined: Mon Aug 26, 2019 5:50 pm

Re: Our Sun

#3

Post by timh »

Hi Carl,

Like Menno - no experience here in solar - I can see the attraction because it is always dynamic and different. Impressed with that detailed full image.

The only thing that I can think in terms of improvement is perhaps to first ask the question of whether or not there is any headroom for improvement? Given the distance and size of the sun it should be possible to work out the angular size of the features your picture is resolving and then work out whether that tallies with the physical constraints of your set up - e.g. if it works out that you are sampling at say 0.7 arcsec/ pixel then with everything working well you should be resolving at maybe twice that?

Tim
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oopfan
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Joined: Sat Jul 08, 2017 2:37 pm
Location: New York
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Re: Our Sun

#4

Post by oopfan »

Hi Carl,

Is this a negative color image? I am accustomed to limb darkening but it appears to be the opposite.

Thanks,
Brian
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oopfan
Posts: 1342
Joined: Sat Jul 08, 2017 2:37 pm
Location: New York
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Re: Our Sun

#5

Post by oopfan »

I agree with Tim, there might be better camera choices. Your ASI120 has a rather large pixel size of 3.75um for your 500mm scope. I think that the ASI290 might be better at 2.9um but please check the Field of View first. Here are some helpful calculators:

https://astronomy.tools/calculators/ccd_suitability
https://astronomy.tools/calculators/field_of_view/

(As I suspected the edge of the ASI290's sensor touches the limb of the Sun. That's too bad. It's a good camera except for the sensor dimensions.) I'd keep looking for a better camera, perhaps 2.1um.

Brian
CarlGreen
Posts: 43
Joined: Sat Feb 13, 2021 9:06 am
Location: England (Northamptonshire)

Re: Our Sun

#6

Post by CarlGreen »

oopfan wrote: Wed Jun 19, 2024 10:31 am Hi Carl,

Is this a negative color image? I am accustomed to limb darkening but it appears to be the opposite.

Thanks,
Brian
Hi Brian, it is a B/W image Inverted and then false colour added.
Carl
Celestron 9.25 - Altair 155 f8
GoTo Evolution Alt-Az Mount - Eq8
Starsense Explorer
Celestron Focus Motor
QHY5iii462C / Skyris 132M / ZWO ASI294MC Pro
Celestron f6.3 Focal Reducer
Windows 10 Home Edition
I5 - 825OU CPU - 180 Ghz, 8GB RAM
CarlGreen
Posts: 43
Joined: Sat Feb 13, 2021 9:06 am
Location: England (Northamptonshire)

Re: Our Sun

#7

Post by CarlGreen »

oopfan wrote: Wed Jun 19, 2024 10:57 am I agree with Tim, there might be better camera choices. Your ASI120 has a rather large pixel size of 3.75um for your 500mm scope. I think that the ASI290 might be better at 2.9um but please check the Field of View first. Here are some helpful calculators:

https://astronomy.tools/calculators/ccd_suitability
https://astronomy.tools/calculators/field_of_view/

(As I suspected the edge of the ASI290's sensor touches the limb of the Sun. That's too bad. It's a good camera except for the sensor dimensions.) I'd keep looking for a better camera, perhaps 2.1um.

Brian
I received my Player One Neptune M today and am looking forward to trying it out! Its a good match according to Astronomy tools, but the proof will be in the pudding.......

Carl
Celestron 9.25 - Altair 155 f8
GoTo Evolution Alt-Az Mount - Eq8
Starsense Explorer
Celestron Focus Motor
QHY5iii462C / Skyris 132M / ZWO ASI294MC Pro
Celestron f6.3 Focal Reducer
Windows 10 Home Edition
I5 - 825OU CPU - 180 Ghz, 8GB RAM
User avatar
oopfan
Posts: 1342
Joined: Sat Jul 08, 2017 2:37 pm
Location: New York
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Re: Our Sun

#8

Post by oopfan »

Carl,

Great choice, good price!

Brian
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