Edwin Quail @EdwinQuail

Quick crop of a quick stack - #Comet C/2025 R2 (SWAN) passing Antares below the Dark Horse nebula in the Milky Way - also visible - #asteroid #Vesta and other things. 10th Oct at Palm Beach, New South Wales. Canon 6D on Askar SQA55 on SA Pro mount. 2 versions, 2nd one has labels

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Edwin Quail @EdwinQuail

9 months ago

Comet C/2025 R2 (SWAN) is adjacent to the star Zubenelgenubi tonight. The brightest star in Libra, it has one of the best roll-off-the-tongue names..

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Edwin Quail @EdwinQuail

9 months ago

For the closest approach between #comets #SWAN & #ATLAS on 20th Oct I went to a darkish site with everything but a power pack for the mount. Next night was problematic - windy, light leaks, I messed up the flats - hence this belated and grubby rendition - see Alt texts.

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Edwin Quail @EdwinQuail

9 months ago

Well the smoke pretty much cleared and I got the two comets 4.5 degrees apart in one picture, along with Mars. They're moving in different directions, so are blurred against the fixed stars. I can fix this but for now here's the quick image along with an annotated version

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Edwin Quail @EdwinQuail

9 months ago

The attempt to capture two comets in one image with a diminutive telescope has been successful two nights ago from an urban environment and last night from a relatively dark (if smoke-affected) site. Will take a while to process the images..

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Edwin Quail @EdwinQuail

9 months ago

Hoping some of the 'controlled hazard reduction burn' smoke clears before the comet shows up

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Edwin Quail @EdwinQuail

9 months ago

Guess the location..

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Edwin Quail @EdwinQuail

9 months ago

@sealdreams_ Good luck! You'll need a clear western horizon and a site away from light pollution - comet ATLAS is much fainter than SWAN and both will be low in the sky. Sky is darkening (good) but comets are getting lower (bad). You need to wait for the sweet spot if there is one ☄️

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Edwin Quail @EdwinQuail

10 months ago

New #comet #Swan will cross paths in the sky with another, fainter comet, C/2025 K1 (ATLAS) around September 20th. Here's how they're going: Details in next post..

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Edwin Quail @EdwinQuail

10 months ago

Here are 'close-ups' of the two #comets as they appear in relation to each other and #Mars on the evenings of 20th & 21st September. Spica is out of shot. Comet #SWAN is likely to be about 2 magnitudes brighter than comet #ATLAS, but comet magnitudes are a bit - unpredictable..

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Edwin Quail @EdwinQuail

10 months ago

New #comet #SWAN25B is now known as C/2025 R2 (SWAN). Here's where it will be until 30th September. It will soon appear close to another comet - see next two posts..

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Edwin Quail @EdwinQuail

10 months ago

New #comet - called (for now) #SWAN25B low in the west after sunset yesterday at 7pm in #Sydney - just below the #star Spica and #Mars (the red one). Comet tail looks to be about 2.5 degrees long but lots of light pollution and haze. Canon 6D on SQA55. Hasty processing.

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Dylan O'Donnell 🦋 @erfmufn

10 months ago

You spend 40hrs on a nebula & you can't take 10 secs to... SIGN DARK SKY PETITION aph.gov.au/e-petitions/pe… VID RANT youtube.com/watch?v=fmSeov… Send this video to your local astronomy club. Also if the members don't sign it, kick them out of the club. Ok not really, but seriously

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Edwin Quail @EdwinQuail

10 months ago

@ProfBrianCox This'll sort you out - Sean Carroll at Caltech 2018 - a PDF: arxiv.org/pdf/1802.02231… Among other things, all a bit of a matter of definitions