Love my Val ERF

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Starry Jack
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Love my Val ERF

Post by Starry Jack » Sun Feb 24, 2019 3:44 am

I'm really enjoying the new ERF from VAL on my PST Stage 1 152mm. I can Barlow only rarely since my scope does not like too much power, so today was a non-Barlow day. This is an AutoStakkert stack of 20 frames with a bit of curves adjustment.
Ultra Smooth Map_Exp-20ms  HDR-Y-0-64-in-8s Sharp-No Gain-32 Gamma-69 DF-Y  CG-H Hist 20-250-0002_g4_ap7445_conv.png
Ultra Smooth Map_Exp-20ms HDR-Y-0-64-in-8s Sharp-No Gain-32 Gamma-69 DF-Y CG-H Hist 20-250-0002_g4_ap7445_conv.png (5.08 MiB) Viewed 580 times
Thanks for all your help over the years,
Starry Jack

Starry Jack
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Re: Love my Val ERF

Post by Starry Jack » Sun Feb 24, 2019 3:56 am

Oops. Here is the adjusted one...
Solar Adjusted.png
Solar Adjusted.png (1.64 MiB) Viewed 579 times

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Re: Love my Val ERF

Post by marktownley » Sun Feb 24, 2019 5:56 am

Very nice! Is this with an ERF from Valery?
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Starry Jack
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Re: Love my Val ERF

Post by Starry Jack » Sun Feb 24, 2019 6:04 am

Yes. The scope is a 152 mm f6.5 achromat with Baader corrector to make it an f11 thereabouts.

His ERF Is a 6” Ha and Calcium if I recall.

Jack

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Carbon60
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Re: Love my Val ERF

Post by Carbon60 » Sun Feb 24, 2019 6:05 am

Are you using any form of sharpening after stacking, Jack? Try ImPPG if not.

Stu
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Starry Jack
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Re: Love my Val ERF

Post by Starry Jack » Sun Feb 24, 2019 10:19 pm

Stu,
Great question which got me started on a couple of new directions (thank you for that).

First, I had indeed done sharpening of 15 in Autostaakert.

Second, per your suggestion, I did download IMPPG and gave that a whirl with the defaults and a bit of playing around then imported into GIMP (again, I have you to thank for bringing that back into my life) and attached the result here. Not knowing what I was doing seemed to produce a but of graininess.
IMPPG Test 1 then GIMP.png
IMPPG Test 1 then GIMP.png (1.87 MiB) Viewed 530 times
Below is the original image (not from IMPPG) but also processed in GIMP to have brighter curves and better contrast. I like this result the best but am open to coaching!
Solar Adjusted in MCS then GIMP.png
Solar Adjusted in MCS then GIMP.png (1.93 MiB) Viewed 530 times

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Valery
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Re: Love my Val ERF

Post by Valery » Tue Feb 26, 2019 12:17 am

Hi Jack,

Better to not use any sharpening in Autostakkert. Use the 16bit TIF stacked images from it in another image processing tools.

I personally prefer AstraImage Pro 3.0 It consists excellent deconvolution tools like Lucy-Richardson, Maximum Entropy and Van Cittert.
It also has Wavelet sharpening tool and Unsharp Mask. These deconvolution tools are best I ever met in similar tools. They are quite easy to understand and use.

And do not colorize images untill you will reach a certain level of processing with just b/w images. Adding colorization makes things worser if an image is not well doen in a b/w.

Valery
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Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.

Starry Jack
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Re: Love my Val ERF

Post by Starry Jack » Tue Feb 26, 2019 12:32 am

Thanks, Val. What is the group consensus on Registax? I finally got that working as well yesterday and produced nice results.

Part of my workflow though is shooting in color because I do outreach and b/w simply is not as fun for the people watching.

Jack

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Re: Love my Val ERF

Post by solarchatted » Mon Mar 04, 2019 3:46 pm

Nice results there ...

What an inspiring thread! :cool:

I will be playing with my newly 'second-hand# PST and one day I will do stage 1 using my not much used Explorer Scientific AR152 F/6.5. I guess Altair 178M should be OK with AR152.

It might be just my retirement hobby - mostly Solar/Lunar - I guess.
SolarChatted

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Re: Love my Val ERF

Post by Starry Jack » Mon Mar 04, 2019 4:30 pm

SolarChatted,
I'll be happy to share my hard-earned experience with this arrangement. I use a different camera but lots of success with the PST, a Baader glasspath corrector and the ERF.

Jack

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