This is really great work - thanks for your efforts Best regards Daniel Calleja Sydney, Australia http://www.users.bigpond.net.au/calleja/ ... From:...
I am about to buy a 20Da and can't get any information on a filter that will put back what was taken away for daytime use. I understand that the difference is...
Alan: I have the 20Da camera and also looking for the filter that Canon says exists to compensate for the 2.5X Red/IR increased capability, hope someone can...
Thanks Eric, I am told it "really" not needed by many people, but there are differences. I feel Canon should know what they are talking about but I am not...
Hi Guys, Maybe you find the required filter here http://www.maxmax.com/aXNiteFilters.htm Another thing is that any aditional glass you put in front of a lens ...
Thanks Rainer, I wa just advised that the aXNite was overkill but good fot the Hutek design. Alan ... [Non-text portions of this message have been removed]...
Hi filter lovers, Let us get to basics. Do you want a filter for protection or a filter for color correction? You cannot do both in one filter. For as precise...
Hi Samir, you wrote "hence a UV filter on each lens was the in-thing. I had them too. DSLRs have UV/IR blocking filters already built-in. As for "protection" I...
Rainer: I was looking for the filter that Canon mentions, just to use it in front of a lens for daylight photography. I donīt use high end lenses on my Canon,...
Hi Eric, A custom white balance can be made in less then a minute and it works the whole day long. Defocus completely your lens and shoot a cloud or any nearly...
Evening Folks! I'm just getting the narrow-band bug, and was wondering what problems if any are involved with guiding with such filters. Do you find it ...
Gary, good question. I've guided many of my published narrowband images with Astrodon 6 nm narrowband filters in my STL11000XM camera. Many emission objects...
Thanks Don! I have the STL-11000M along with the remote guiding head. I wanted to avoid an off-axis guide scope due to flexure, etc. Right now I've only got...
Afternoon Group! Hope you don't get tired of newby simplistic questions! I've got a new SBIG STL-11000M vamera with the Custom Scientific filter set. (I'd have...
Hi Don, Can the ROAG be used with Starlight Xpress cameras such as the SXV-H9? Clear skies, Kevin Dixon www.kevindixon.westhost.com From: "Don Goldman"...
Kevin, the ROAG accepts any 1.25" nose piece CCD. Don ... H9? ... narrowband ... and ... If ... have as ... H-a ... using ... not ... just ... rotate ... of ...
Gary, this is an ongoing debate with no absolute answer in the imaging community. I feel that the NIR blocked luminance provides the best match for color,...
If not IR blocked, Why have a fitler at all? I assume it is to hold focus position, but all the guru's recommend focusing each filter everytime. Kevin ... ...
Many don't use a filter at all for the luminance, ala Stan Moore, but he often just does hours of luminance to go as deep as possible and does not add the...
Hi all... I have posted this note specifically for Don Goldmans input, but any thoughts form other filter users are more than welcome. I have over the years...
Hi, Brian, I think you were correct in what you stated. First, the degree to which filters are parfocal depends primarily on their thickness. I cannot speak...
Don, Just to add to this, there are three factors that contribute to parfocal-ness (Is that a word?) - filter substrate thickness, OTA color correction and OTA...
Morning Folks! I'm saving up for one of Don's "Rogue" OAG's, but need a cost conservative option until that time. I have a C-14 with large visual back,...
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