Venus UV/IR 01/09/2021

[multiweb]

Here's my Venus shots. Learnt a lot about imaging over a hot roof. The roof always wins :)

First one is a bicolor so IR[red] UV/IR[green 50/50] UV[blue]

I got about 5000 frames in each stack. 90s for IR and 120s for UV.
Still not getting much details in IR but I suspect my focus is not 100%.
The UV being in the blues suffer a bit from the lower altitude and turbulences.

And here's an attempt at seeing some semblance of rotation with an animated GIF (http://www.astropic.net/astro/Venus_UV_20210901.gif).

There's a lot of stuff moving but mostly noise and color mottling. So I have and ADC on order and will try again.

I suspect getting these two early morning rising from the east when the air is stable and cold might be a better strategy. But it takes some courage to get up that early and freeze one's balls. :cold: I'm not sure if I'm that committed yet.

[Dave882]

Wow that’s really impressive! Love the bi-colour shot!!
Yeah I think mornings will yield much better results - even just after sunrise will be less dancing around I reckon

[multiweb]

Thanks David. :thumbsup: Yeah I'll have to work something out for the morning.

[h0ughy]

Wow that's cool. Results are unbelievable

[multiweb]

Thanks Helioman :thumbsup:

[h0ughy]

I'm being treated for the gas

[Eris]

Congratulations Marc. I think you have done really well. Your planning and forward thinking suggests your next shots can be even better. Four thumbs up! One for each shot.:thumbsup::thumbsup::thumbsup: :thumbsup:

[multiweb]

I doubt that. :lol:


Thanks Gerard. :thumbsup: I must admit I'm having a lot of fun doing planetary lately. Something new to do. I'm starting to get aperture fever. I'm running this poor 8" scope to its limit. Probably past a little bit too. :lol:

[Anth10]

Marc,
I’ve never seen an amateur shot of Venus and this is absolutely fantastic. Really like the colour and the classic half phase shot is a treat. Reminds me of my first Astro book as a kid in the 80’s. Venus is an intriguing planet- you’ve managed to bring it out for all to enjoy.
Well done!!
PS- I’m tipping you will get up early and put yourself through the pain and effort for an even better shot next.
Anth

[N1]

Marc, inredible imagery, well done!
That's about as good as it gets, given the current phase and seeing conditions generally. She's approaching us though, so the next 8 months or so, right through inferior conjunction, will be interesting!

[multiweb]

Thanks for the encouragements guys. :thumbsup: A quick google search shows that this bloke in Poland (https://www.astrobin.com/z6maur/B/?nc=all) did exactly that a while ago.



:lol: Getting out of a warm bed is a big ask.



Thanks for the heads up. I was wondering where it was headed. I have to look up Mercury as well as there is a good separation right now.

[Retrograde]

Phenomenal work Marc. :thumbsup:

Which IR & UV filters did you use?
I've heard a good strategy is to image Venus during the day when it's higher in the sky but not sure if it still allows for this level of subtle detail.

[multiweb]

Thanks Pete. :thumbsup: I used the 2" Astronomik Pro Planet 742nm for IR and the 2" Baader "U filter" for UV.

Good idea about daylight imaging. I often wondered if the moon was ok to image during day time but never thought about Venus. I'll certainly give it some thought. :thumbsup:

[cometcatcher]

That's excellent Marc!

[multiweb]

Thanks a lot Kev. :thumbsup:

[rustigsmed]

Really nicely done Marc - you got a lot of detail in UV - i didn't have as much luck - perhaps it was the camera i used or more likely i didn't get focus on.I have to go back over my data when i get more time.

[multiweb]

Thanks Russ. :thumbsup: I saw your shot. You still got some. I got lucky to get anything really. It was very faint, noisy and wobbly. Took me a while to find the right exposure and trying to increase the number of frames to stack. Here's my SER header:

Filename: S:\WIRUNA\CN-212\20210831\Ven\310821\2021-08-31-0806_3-U-UV-Ven.ser
Filesize: 2888680434 bytes

Header Details:
* FileId: LUCAM-RECORDER
* LuID: 0
* ColorID: 8 (RGGB)
* LittleEndian: 0
* ImageWidth: 584
* ImageHeight: 520
* PixelDepth: 8
* FrameCount: 9512
* Observer:
* Instrument: ASI=ZWO ASI462MCtemp=26.1
* Telescope: fps=98.52gain=546exp=9.46
* DateTime: 31/08/2021 08:05:35.350000 (0x8d96c561ca99960)
* DateTime_UTC: 31/08/2021 08:05:35.334000 (0x8d96c561ca72860)

Timestamps:
* Timestamps are all in order
* Min timestamp: 31/08/2021 08:05:35.334000 UT
* Max timestamp: 31/08/2021 08:07:05.339000 UT
* Min to Max timestamp difference: 1 min 30.005 s
* Average frames per second: 105.672

[rustigsmed]

thanks for the details - I will cross reference when i get the chance. Indeed it was more slippery than I anticipated :lol: