[multiweb (Marc)]

Originally Posted by jjjnettie

Wide Field rules!!
It's nice for a change isn't it. Low stress imaging.

Thanks JJJ. Sure is. Nothing else to do with the seeing of late.

Originally Posted by Dennis

Wow Marc- you don’t hang around do you, already putting the Pentax 200mm F4 to work! That is a very nice shot – the 4 Meg image is an absolute ripper!
Cheers
Dennis

Thanks a lot Dennis. Glad you like dit. This is a bit new to me and I wasn't sure about posting it.

Originally Posted by desler

I quite agree with everyone Marc. Nice, very nice! and the learning curve continues!
Darren

Thanks for the kind words Darren.

Originally Posted by Ross G

Wow Marc!
A 50mm and a 28mm. There is no stopping you now.
You've got all FOVs covered. You are going to need a 2nd and maybe 3rd camera!
The quality (...and quantity..) of your work will be amazing. I am looking forward to it.
I have been experimenting this week with the 50mm lens. I am finding I like it even more then the 135mm.
Good luck.
Ross.

No camera for me for a while. My next one will be definitely a mono.

Originally Posted by gbeal

Again with the #8 wire technology, I used to tape a 1.25" IR/UV filter into the rear of the Pentax 55/4 (67 lens) I used, the rear opening and element were close to the 1.25" size, and the IR/UV cleaned up the bloat a bit.
Gary

Thanks Gary. I was wondering if star bloat was caused by internal reflections or just focusing different wavelength in different locations like chromatic aberration. That's why I thought I'd but the filters before the wole lens assembly.

In NB I did put the Ha/Sii/Oiii filters at the back with no issues at all. No internal reflections and no star bloat which goes inline with what you're saying. Here's 3 channels on the same area I did earlier still to blend. It looks very different in RGB though that's why I went to a dark site to test. I hope to get a lot of data this week-end and test further.