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ASI2600MM vs ASI6200MM vs ASI461MM: Sensor Sizes
Sunday, August 2, 2026 by Richard Harris
There is a surprising amount of confusion surrounding astronomical camera sensor sizes. I regularly hear one group argue that full frame is automatically better, while another insists that larger sensors are basically identical to smaller ones except for the amount of sky they capture. Neither posit...
Optolong L2 Dual Combo Filters Review
Thursday, July 30, 2026 by Jim Thompson
Optolong's multi-narrowband (MNB) filter is called the L-Synergy. It has a 7nm wide pass band at O-III and another at S-II. When paired with their existing L-eXtreme filter and a one-shot colour (OSC) camera, one is able to produce nebula images using the Sulphur-Hydrogen-Oxygen (SHO...
The Universe, Live: Rubin Observatory Flips the Switch on Real-Time Space Monitoring
Wednesday, February 25, 2026 by Richard Harris
The NSF DOE Vera C. Rubin Observatory has turned on a new capability for astronomy by issuing its first stream of scientific alerts that report what is changing across the night sky. This is the start of a real time discovery service at observatory scale. NSF DOE Vera C. Rubin Observatory launches r...
Astronomy software Meridian launches in BETA
Monday, February 23, 2026 by Richard Harris
Meridian is a new native macOS app from Andrew Burwell, that scans your FITS and XISF archive and organizes it into a searchable, visual catalog of your imaging history. After more than ten years of deep sky imaging, the app's creator found that his archive spanned many drives and folder sche...