Jupiter, Ganymède and Io with Newtonian 300 + ZWO ASI 385 -

xs_man

Hi Sam, ;)

Hi all,

In France, Jupiter's maximum height over the horizon is less than 27°!

Very frustrating. And after a lot of nights with poor seeing conditions

and bad captures, I was finaly a little bit lucky last 7th May 2018.

The 16/9 size of ASI 385 sensor is very usefull to catch Jupiter and it's

nearest satellites. Here I choose to use a big ROI to reduce a little bit

the .Ser captures size.

SETUP :

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Newtonian Orion Optics 300 mm F/D 5.3, on EQ-6 Mount

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ZWO ASI 385 with Ir/Uv Cut filter + barlow 3x + ADC.

Acquisition with Firecapture.

Gain = 434.

Exposure time : 8 to 9 ms.

Frame rate : near 110 images/sec

26000 + 19000 raws captured. Near 15300 sorted out.

Manual sort out.

Registration with AS!3.

Derotation of 6 composed images.

Processing and post-processing with Iris + Photoshop.

Final image reduced to 90 % :

Final image reduced to 70 % :

~~Albéric~~

etienne

Salut Albéric ,

Great pictures , comme d'habitude !!

Clear skys ,hélas pas comme en ce moment !!!!! :( :(

Etienne

xs_man

Many merci Etienne ! :

Meilleurs.

Albéric

tareqphoto

Hey Albéric,

Nice results, well done!

Have few questions:

1. Which ROI did you use here?

2. I am using Sharpcap because i don't know how to use Firecapture yet, i see you use Gain = 434, is this value here will be the same in Sharpcap or both software giving different settings value? Because this is high gain number, even if i shoot 20K frame with Gain 300 it is still noisy, so i don't know if gain isn't much a problem if shooting really so many frames, say if we shoot like 30k or 40k frames and gain 500 it will be fine?

3. I have same camera, and you get really nice result with the scope you use, so how large you can go with this camera if you want to shoot planets? is Newtonian scopes good enough or as all recommend to go with SCT? because i am thinking about say 16" Newtonian or even 18" Newtonian, is that good or not?

Thanks if you answer my question

Tareq