Jupiter GRS & Io transit Aug 21st 2023

[Space Cowboy]

Quick process from this morning the very first capture. Seeing was average but seemed to fall off after a few mins.

 

[Kon]

Very nice Stuart. Did you manage some of the transit?

[Space Cowboy]

42 minutes ago, Kon said:

Very nice Stuart. Did you manage some of the transit?

Not the shadow. Just Io sitting next to the GRS. It's pretty blurry. I was rushing and forgot to reconnect the primary fan after collimation. Used a Barlow with the laser and ended up running out of time before daylight. 

[morimarty]

Great capture Stuart. for a quick process you've done a brilliant job with loads of subtle detail on offer.

[Kon]

20 minutes ago, Space Cowboy said:

Not the shadow. Just Io sitting next to the GRS. It's pretty blurry. I was rushing and forgot to reconnect the primary fan after collimation. Used a Barlow with the laser and ended up running out of time before daylight. 

Still a very nice result; I assume you will be derotating a few later. I find early mornings more prone to silly errors; the other day I forgot to remove the front cover and I could not work out why I could not see Jupiter on my capture screen 🤣.

[Space Cowboy]

1 hour ago, morimarty said:

Great capture Stuart. for a quick process you've done a brilliant job with loads of subtle detail on offer.

Cheers Martyn! Always nice to capture the GRS even if seeing wasn't quite as good.

[Space Cowboy]

1 hour ago, Kon said:

Still a very nice result; I assume you will be derotating a few later. I find early mornings more prone to silly errors; the other day I forgot to remove the front cover and I could not work out why I could not see Jupiter on my capture screen 🤣.

I soon get frustrated if I know something is taking longer than expected and collimation gets my blood up more than anything. At least I know i'm not alone in the error stakes 🙃

This is three 2 min runs combined in winjup. Not sure if its made much difference. I stacked 30% on each so maybe try less as noise wasn't too bad as I had gain slightly lower.

 

Edited August 21, 2023 by Space Cowboy

[Space Cowboy]

A whopping 7 min animation.

 

[orion25]

Great image, Stuart! Lots of detail; loving the GRS. Brilliant animation

[Kon]

3 hours ago, Space Cowboy said:

I soon get frustrated if I know something is taking longer than expected and collimation gets my blood up more than anything. At least I know i'm not alone in the error stakes 🙃

This is three 2 min runs combined in winjup. Not sure if its made much difference. I stacked 30% on each so maybe try less as noise wasn't too bad as I had gain slightly lower.

 

 

I think it has more depth to it.

The animation came out nicely too.

[GordonD]

Your images are always wonderful - so detailed and lifelike. You have great skill. I always enjoy looking at them so thanks for posting them.

[Space Cowboy]

26 minutes ago, GordonD said:

Your images are always wonderful - so detailed and lifelike. You have great skill. I always enjoy looking at them so thanks for posting them.

Thanks Gordon that means a lot. Its a tough hobby to master and sometimes very frustrating but being able to share the results with other enthusiasts always makes it worth while.

[Space Cowboy]

4 hours ago, orion25 said:

Great image, Stuart! Lots of detail; loving the GRS. Brilliant animation

Cheers Reggie! Animations are always good at bringing moon transits to life.

[Space Cowboy]

2 hours ago, Kon said:

I think it has more depth to it.

The animation came out nicely too.

Thanks Kostas, yes, I can see now I;ve got them up on my big monitor that there is more definition. Pleased with the noise level especially on these though after checking the capture details gain was only 3% less than last time. Animation images are straight out of registax wavelets so might do them a bit more in analyser.

[si@nite]

Very nice stuart conditions were better for Saturn than Jupiter this morning, some very nice detail on thoes well captured!

[Space Cowboy]

49 minutes ago, si@nite said:

Very nice stuart conditions were better for Saturn than Jupiter this morning, some very nice detail on thoes well captured!

Thanks Simon. Saturn is my intended target next time for sure.

 

Here is a widefield shot.  Alas my laptop runs out of buffer after 1 min of full frame vids with the QHY585.

 

[Pete Presland]

Excellent looking image Stuart, a very nice natural end result has been achieved i think.

[Space Cowboy]

11 hours ago, Pete Presland said:

Excellent looking image Stuart, a very nice natural end result has been achieved i think.

Thanks Pete. Could have been better if I'd had proper collimation. Checked with a cap after this and secondary was out. I've been too dependent on a laser and it's caught me out. 🙄

[Pete Presland]

Just now, Space Cowboy said:

Thanks Pete. Could have been better if I'd had proper collimation. Checked with a cap after this and secondary was out. I've been too dependent on a laser and it's caught me out. 🙄

I try to do a star test as often as possible, the collimation on my SCT does seem to be pretty solid. i guess with the only time i move it is from observatory to the mobile mount in garden must help.

[Space Cowboy]

2 minutes ago, Pete Presland said:

I try to do a star test as often as possible, the collimation on my SCT does seem to be pretty solid. i guess with the only time i move it is from observatory to the mobile mount in garden must help.

I'm looking at using an artificial star in the future. Always been too much in a rush to image before the clouds roll in.

[Pete Presland]

It would seem like a good solution, i have read they are meant to be a pretty good substitute. My biggest barrier to not collimating every session is the dew shield on my SCT, i like to fit it immediately and balance the OTA, but i can not reach the "bobs knobs" when fitted .

[Maurizio83]

The derotated image looks better to me. Very nice shots!