From: Ray Byrne <ray@in4media.co.uk>

Date: May 18, 2010 7:14:28 AM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] first Ha solar-prom image

Hi Ron,

I have to say that your image is better than my first effort with almost the same gear (my 80mm ED scope is a Skywatcher) I didn't have very good transparency though as well as poor seeing.

I'm sure you don't need to use an IR blocker you've already cut that part of the spectrum out with the Coronado filter.

ATB

Ray

On 18 May 2010, at 06:09, cosmicrock2001 wrote:

Hi, thought I'd share my first Ha solar image of prominences. I've posted it in the Solar Files: 20100517_104228.31_L_Enhanced.jpg This was single frame tif. I tried stacking some mov files but the single image seemed better. Using MacBook Pro and DBK21AF camera, 40mm Coronado on Orion ED80mm @ prime focus. PS CS3 for minor adjustment and title. Its no Alan Friedman, but a start anyway. I'll be trying my SCOR-20 camera too, whenever our spring weather starts to settle down more.

One question - do you Ha solar shooters use and IR block filter, like you would for planets? I tried it and images seem better without it. Perhaps not needed with the Ha filters?

Thanks for your continued work on AstroIIDC Milton.

Ron