This example has worked better!

Andy

Original image:

Image after application of SharpenAI (applied to above image):

Quark H – using my new Daystar interference eliminator – it is expensive but no intuitive and easy to use! No Newton’s Rings!

Andy

This post follows from my previous post:

Adding tilt adapter to my Daystar hydrogen Quark filter

My new Rowan Tilt Adapter has successfully removed Newtons Rings from my solar images…..and cling film (thanks for idea from contributors to Cloudy Nights form) is quite good for getting those elusive solar flat fields in FireCapture!

• Quark Hydrogen Alpha filter
• ZWO ASI174MM camera
• Sky Watcher Equinox Pro 100mm OTA
• HEQ5 Mount
• FireCapture software on Windows to capture video
• Processed in ImPPG and Photoshop CS6

Andy

Proof below from picture today (very windy so poor seeing and low contrast so limited solar features visible) – this image 174 frames out of about 1000 taken over 20 seconds – no Newton’s Rings and (relatively) flat field (OK, still some work to do to get this right! Perhaps two layers of cling film…….)

Here is the cling file over the telescope:

Tilt adapter:

Which image do you prefer?

Newly processed image using inverted tone curve:

Or previously processed version (tone curve NOT inverted):

At last! Today, I managed to get a photograph of sun in hydrogen alpha (Quark) showing a prominence – not the best photo but hitherto I seem to have had difficulties getting prominences to show up/

Andy