By Gabriel Muñoz | 2025-08-25
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New bright comet SWAN25B
On 09/13/2025 08:44 am by Filipp Romanov | Website | Siding Spring Observatory, Australia
On 2025-09-13 I confirmed new bright comet SWAN25B remotely using iTelescope.Net T59 (0.51-m f/6.8 reflector + CCD) located at the Siding Spring Observatory, Australia.
I measured: magnitude of the coma = +8.9 mag., coma diameter = 2 arcminutes with a straight tail (which becomes wider away from the coma) at least 18 arcminutes in length (to the edge of the frame), PA = 112 degrees.
Images: stacked 3x10 sec. (RGB) and single 60 sec. (Luminance filter).
