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INDI Library v1.8.5 Released (19 Apr 2020)

April 2020 release of INDI Library v1.8.5 introduces new drivers while providing fixes and improvements to existing devices and core framework.

Re:How to shoot comets?

1 month 2 weeks ago
maxthebuilder
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Re:How to shoot comets? #51623
I am not touching PI even with a ten-feet pole..
I did give Siril a try thought. It produced better results than DSS (for "freezing" the comet).
I think I am OK with comets now.
What I need is darker skies...
Thanks!

Max S.
RPI 3 B+ with ABerry and RPI 4 B (4Gb) with SMate.
Nikon D5500 H-a modified. 180 mm f/2.8 antique Nikon. Tamron AF 28-75mm f/2.8. Rokinon 135mm f/2.
AT72EDII.
ZWO ASI294MC Pro
ZWO ASI120MC-S on ZWO 30F4 MiniScope.
SW AZ-GTi.
SW HEQ5.
iOptron SkyTracker Pro.
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1 month 2 weeks ago 1 month 2 weeks ago by maxthebuilder.
maxthebuilder
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Re:How to shoot comets? #51701
Here's what I've got.
Comet C/2019 Y4 ATLAS. Double montage. Stars "frozen" + comet "frozen" + the Moon to show the scale.
30x240s. ASI294MC Pro. Gain 200. -5C. LPro filter. AT72EDII scope. Bortle 9 with street lights all around.
Acquired with KStas/Ekos, Stellarmate 1.5.1 on RPI4. Stacked with Siril (worked better than DSS), processed in APP (to stretch and remove light pollution) and Photoshop.

Max S.
RPI 3 B+ with ABerry and RPI 4 B (4Gb) with SMate.
Nikon D5500 H-a modified. 180 mm f/2.8 antique Nikon. Tamron AF 28-75mm f/2.8. Rokinon 135mm f/2.
AT72EDII.
ZWO ASI294MC Pro
ZWO ASI120MC-S on ZWO 30F4 MiniScope.
SW AZ-GTi.
SW HEQ5.
iOptron SkyTracker Pro.
Attachments:
The following user(s) said Thank You TallFurryMan, xsnrg

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1 month 2 weeks ago
TallFurryMan
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Re:How to shoot comets? #51716
Excellent!

-Eric

HEQ5-Pro - Atik 314E - Orion ED80T - DMK21 on Orion 50mm
DIY 3D-printed Moonlite and FWheel RGB/LPR
KStars and indiserver on two Atom 1.6GHz 1GB RAM Linux, VPN remote access

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1 month 2 weeks ago
Aurneth
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Re:How to shoot comets? #51752
I'm curious how you went about this... did you stack everything twice? Like stack once for the starfield (which on a median stack or average stack with median rejection ought to remove the comet) and then stack again for the comet, which you then must have copied across to the starfield shot? If you do a comet stack in Siril you'll get star trailing.

Personally, I'm always a tad leery of putting a shot of the Moon in because there are quite a lot of faked photos around with vastly out-of-scale moonshots. I get the reasoning of providing scale but I think I'd encapsulate it in an "inset" box (at scale of course) to make it clear that the Moon never appeared in that starfield.

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1 month 2 weeks ago
maxthebuilder
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Re:How to shoot comets? #51753
Agree on the Moon.

Yes I stacked twice. Lassoed out the comet from the comet stack and pasted/blended into the starfield stack. Luckily, the comet didn't have large stars close-by (there's still some light trailing around).

Max S.
RPI 3 B+ with ABerry and RPI 4 B (4Gb) with SMate.
Nikon D5500 H-a modified. 180 mm f/2.8 antique Nikon. Tamron AF 28-75mm f/2.8. Rokinon 135mm f/2.
AT72EDII.
ZWO ASI294MC Pro
ZWO ASI120MC-S on ZWO 30F4 MiniScope.
SW AZ-GTi.
SW HEQ5.
iOptron SkyTracker Pro.

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