@portableastronomy.bsky.social
It's really not poorly processed. It's actually a good start.
February 28, 2025 at 9:42 PM
It's really not poorly processed. It's actually a good start.
The image is a composite of 24 color lights with dark, flat, and bias frames, stacked with Siril and processed with GraXpert, Siril, and PS. Images captured with a C9.25, using PHD2, APT, and CdC with ASI 183 camera at 270 gain, 70 offset, and -10C with OAG and 0.63 reducer, on an Orion Atlas.
February 25, 2025 at 6:10 PM
The image is a composite of 24 color lights with dark, flat, and bias frames, stacked with Siril and processed with GraXpert, Siril, and PS. Images captured with a C9.25, using PHD2, APT, and CdC with ASI 183 camera at 270 gain, 70 offset, and -10C with OAG and 0.63 reducer, on an Orion Atlas.
The nebula has both emission and reflection components. Strong radiation from one of the hot young stars in the cluster is believed to be causing the emission component of the nebula to glow. The fainter parts of the nebula are reflecting light from stars in the cluster rather than emitting light.
February 25, 2025 at 6:05 PM
The nebula has both emission and reflection components. Strong radiation from one of the hot young stars in the cluster is believed to be causing the emission component of the nebula to glow. The fainter parts of the nebula are reflecting light from stars in the cluster rather than emitting light.
Beautemous!
February 24, 2025 at 2:12 AM
Beautemous!
Very interesting image! Would you mind sharing a few more details - camera, any filter used, individual exposure length, and anything else you would be ceiling to share?
January 25, 2025 at 3:40 AM
Very interesting image! Would you mind sharing a few more details - camera, any filter used, individual exposure length, and anything else you would be ceiling to share?
Exposure: C 9.25 with 0.63 focal reducer and L-Enhance filter, ZWO ASI 183 camera at gain 270, offset 70, -10 C, with telescope control using APT, PHD2, and CdC; processed with Siril, Graxpert, MS ICE, and Photoshop; a six-panel mosaic of about 50 900s images with darks, flats, and biases.
January 5, 2025 at 12:08 AM
Exposure: C 9.25 with 0.63 focal reducer and L-Enhance filter, ZWO ASI 183 camera at gain 270, offset 70, -10 C, with telescope control using APT, PHD2, and CdC; processed with Siril, Graxpert, MS ICE, and Photoshop; a six-panel mosaic of about 50 900s images with darks, flats, and biases.
The California Nebula is hard to view directly because it's faint and quite large - too large for most telescopic fields of view. But parts of the nebula take a good picture. This image was captured through a filter which brings out some of the light emitted from glowing hydrogen in the nebula.
January 5, 2025 at 12:07 AM
The California Nebula is hard to view directly because it's faint and quite large - too large for most telescopic fields of view. But parts of the nebula take a good picture. This image was captured through a filter which brings out some of the light emitted from glowing hydrogen in the nebula.
It's an eclipsing cataclysmic variable, which means it dims when one star of the pair moves in front of the other, plus it flares up once in a while as well. HT Cas is very faint, about 15-16th magnitude in the northern sky. But it can be imaged and looks like a blinking star in a time lapse video.
December 28, 2024 at 4:12 AM
It's an eclipsing cataclysmic variable, which means it dims when one star of the pair moves in front of the other, plus it flares up once in a while as well. HT Cas is very faint, about 15-16th magnitude in the northern sky. But it can be imaged and looks like a blinking star in a time lapse video.
I do astronomy outreach, astrophotography, and visual observing.
November 27, 2024 at 12:37 AM
I do astronomy outreach, astrophotography, and visual observing.
Exposure info: A 15-panel mosaic of 900 sec images (w darks, flats, and biases) captured with a Celestron 9.25 SCT, ZWO ASI 183 gain 270 offset 70, -10C, off axis guider, under control of APT and CdC software, processed with Siril, GraXpert, ICE, and Photoshop.
November 27, 2024 at 12:35 AM
Exposure info: A 15-panel mosaic of 900 sec images (w darks, flats, and biases) captured with a Celestron 9.25 SCT, ZWO ASI 183 gain 270 offset 70, -10C, off axis guider, under control of APT and CdC software, processed with Siril, GraXpert, ICE, and Photoshop.
Exposure info: A 15-panel mosaic of 900 sec images (w darks, flats, and biases) captured with a Celestron 9.25 SCT, ZWO ASI 183 gain 270 offset 70, -10C, off axis guider, under control of APT and CdC software, processed with Siril, GraXpert, ICE, and Photoshop.
November 27, 2024 at 12:23 AM
Exposure info: A 15-panel mosaic of 900 sec images (w darks, flats, and biases) captured with a Celestron 9.25 SCT, ZWO ASI 183 gain 270 offset 70, -10C, off axis guider, under control of APT and CdC software, processed with Siril, GraXpert, ICE, and Photoshop.
Technical details: 3-panel mosaic with each panel a composite of about 20 light images and a comparable number of dark, flat, and bias images; captured with a C9.25, ASI 183 (gain 270 offset 70), OAG using APT and Cartes du Ciel, processed with Siril, GraXpert, Photoshop, and Image Composite Editor.
November 22, 2024 at 7:18 PM
Technical details: 3-panel mosaic with each panel a composite of about 20 light images and a comparable number of dark, flat, and bias images; captured with a C9.25, ASI 183 (gain 270 offset 70), OAG using APT and Cartes du Ciel, processed with Siril, GraXpert, Photoshop, and Image Composite Editor.