Astro update

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Astro update

Postby toprob » Sun Oct 26, 2025 12:14 pm

Charl's comment in a screenshot thread reminded me that I haven't done an update here lately. Two reasons for this -- first, the $1900 autoguider camera I bought has spent a lot of time being checked under warranty, as it doesn't guide at all with my mount. They weren't able to find any issues, but then again they didn't have any way to test it on any mount. A huge waste of time, but I'm still using it for a couple of functions, even if it doesn't do it's main job.
Then there's been the weather. I've had 2 reasonably clear nights this month, the rest has been terrible. I didn't realise how bad it was here in the Hutt in spring. Hopefully things will start to improve next month.
Most of the targets I'm after at the moment don't rise about the trees until after 1am, so I need to get used to not sleeping much.
Charl -- last night I photographed this group of galaxies while waiting for Orion to rise. So here's a handful out of the 2 trillion to be going on with. The big one is the Great Barred Spiral Galaxy, 56 million light years that-away. Within this shot there's probably at least a trillion stars. My field of view isn't wide enough to get the rest of the galaxies in this cluster, though.
At 2am this morning I aimed the scope at the Horsehead Nebula for the very first time. The first 100 images were out of focus, I managed about 200 in focus, then my scope mount crashed. Never done that before, I hope it isn't a new ongoing issue. The image needs about 5 times the exposure time, which at this rate will take all of November to get.
In the 6 months I've had the scope I've yet to get a proper image, with plenty of exposure time. I have a thingie arriving from Amazon which will let me piggy-back my SLR on the scope, so I'll spend some time with my 250mm zoom lens rather than the 1000mm scope, which may make things a bit easier for a beginner like me.
I am beginning to realise that my mount isn't really up to what I want it to do, but to get a good mount is $4000 to $10000. I'll keep persevering with what I've got.

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Re: Astro update

Postby Charl » Sun Oct 26, 2025 4:27 pm

Very glad my comment didn't cause offence...
It remains hard to get your head around the numbers, we are so very small and far away.

On which topic I happened to find a snippet on Voyager 1, which surely is the Little Satellite that Could.
It was launched almost 50 years ago, and is the first to reach interstellar space.
After all this time, and scooting along at about 17km/second, next year it will be 1 Light Day from earth.

Dropping a distance like 56 million Light Years next to that sure makes you think.
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Re: Astro update

Postby toprob » Sat Nov 01, 2025 11:20 am

Here's my very first crack at the Horsehead nebula. This is about 3.5 hours, I would need three times that to get it looking good. The overly bright Alnitak is something I need to figure out. Lower left is the Flame Nebula. Tonight might be another clear one, but I may go after a brighter target, which makes things easier -- probably Matariki.

This nebula rises about the trees around 12:30, so I got to bed just after 4am. I'm too old for this.

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Re: Astro update

Postby Splitpin » Sun Nov 02, 2025 6:47 am

Star Rob ! Amazing.
When I look at these, everything that I think is important...suddenly isn't so much.
We are just dust in the wind compared to all that.

Love your work my friend .
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