Forgive me if this topic has already been addressed, but I haven't been able to find it on my own here. I would appreciate it if anyone could point me to a thorough tutorial on how to make, and implement 'flat frames' when imaging full discs in Ha. If it helps, I have a Lunt LS100 w/DSII. I use FireCapture, and process my images using Autostakkert2, ImPPG, and Photoshop.
Thank you very much.
Randall Benton
How do I make and use 'Flat Frames"
Re: How do I make and use 'Flat Frames"
Hi there you can read an article by Alexandra Hart ( Montana), you will find it by going to ‘solarnutcase’ and follow until you reach ‘how to image the Sun’ or you can defocus on the whole disk then take a few frames as in Wise Imaging video on YouTube.
- marktownley
- Librarian
- Posts: 42269
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20424 times
- Been thanked: 10243 times
- Contact:
Re: How do I make and use 'Flat Frames"
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
- Montana
- Librarian
- Posts: 34559
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17666 times
- Been thanked: 8787 times
Re: How do I make and use 'Flat Frames"
Sometimes the easiest method when you have a full disc is to let the Sun drift during capture. This only works if you have room on the chip to drift, but any dust bunnies or newton's rings are then in different places and so are not stacked in the stacking software (as it will be tracking solar features and not the fixed features). This is the most simple technique and usually solves the issue in most cases.
Alexandra
Alexandra