Easy Eric (pun,again) its nowhere near the "Eric standard", it doesnt even qualify as a 1st post (is that allowed?). BTW, I get asked for a software upgrade on tring to view your gallery?. Im am more than interested in you imaging in RAW, the 14 vs 8 bit dynamic range should make a big difference. And yes, you now HAVE to do Tarantula.
Steve, these subs were taken with the external Astronomix filter only, I didnt try without it, so yes, the 700nm clip is in place.
Fred, this looks very promising. Lots of red in the spider. My spider with an umodded 400d has almost no red at all.
I'm pretty sure, Hutech replace both the front and middle glass. The front glass is an antialiasing filter, replacing it should improve sharpness. A possible downside is coloured stars if a very sharp star image hits only one pixel in the Bayer matrix.
Post more images! Help me justify buying a new camera!
Sheesh Rob, "Hutech replace both the front and middle glass" tells me nothin . Details !. The advantage with the 40D is live view and 14 bit dynamic range, I think you could mod your cam 1st and see how it goes (depending on budget. No prob?, go the 40D )
Hi Eric
They didnt specify what exactly they removed but herewith a description of the mod from hutech.
They do say that the 400d has both filters removed so i assume same for 40d as the sensor is the same.
See attached pdf
I could be totally off the mark, but I'm pretty sure the Canon front (dust shaker) filter is for antialiasing, almost like a matte glass, designed to blur the image just enough so that a beam of light falls on more than one pixel in the bayer matrix. This antialiasing filter should prevent rainbow and moire effects in everyday use. Probably not required for astrophotography, where sharpness is very important. Looking at Christian's report, this glass also has a gentle UV/IR curve, probably insufficient for astro, so fitting an external UV/IR filter, as Fred has done, is a good thing to do.
The whole set-up of the 40d filter stack makes me wonder if Canon are planning a 40da?
Thats very useful info there. Steve, if hutech removes both filters in your camera, are you sure your anti-dust still works?
Starting to make sense now. The low pass filter (Dust Shaker filter), is also known as the Anti-Aliasing filter with small amount of UV/IR block.
What I don't get is if Hutech removes this filter, wouldn't anti-dust shake will not work?
to Fred, thats why if you just removed the Phaser filter, your leaves are still green because the AA filter is still there blocking the IR so therefore, mine one had the anti-shaker filter and phaser filter removed completely but the anti-dust shaker still works?
to Fred, thats why if you just removed the Phaser filter, your leaves are still green because the AA filter is still there blocking the IR so therefore, mine one had the anti-shaker filter and phaser filter removed completely but the anti-dust shaker still works?
Yes, yes and yes. The shaker is a piezo electric device attached to the filter and would make a noise (but not without it though). They may have removed it and put the piezo on clear glass, but I think that would be difficult and unlikely. It seems this is the last puzzle Eric, but the main thing is, your 40D is set to go with the right lens filters .
hi Eric
All indications are (on the camera) that the dust shaker works.
Also Hutech specifically state that the mod will not disable the dust shaker.
I dont suppose Ted Ishikawa wants to release too much info on the subject.
I did find that Ted and Mia were very friendly and helpful but then I did spend almost US$3000.
Send him a pm and ask for clarification and get it straight from the horses mouth
Hi Steve, yes, people doing the 40D conversions are very very secretive. I guess it is called business. I definitely can hear the dust shaker noise in sensor cleaning ---> clean now function.
Thats really bizzare if hutech removes both the filters, how does the anti-shake feature work? . thats the mystery right now......unless they replaced it as what Fred said with a clear glass but will require alot of work to do so.
Why doesn't Lumicon or Baader make a 1.25 and 2" bandpass filter to do this ?
I'm getting my first DSLR shortly and I will be very reluctant to modify it. Wouldn't that void the warantee ?
And I will use the camera for daytime happy snaps a lot more than astrophotography .... anyway I still have my trusty old and super low vibration Minolta XD5 for astrophotography.
I would much rather , even if cost a bit more , have a 1.25" or better a 2" bandpass filter that cuts off the UV and IR and can be used like a Light Pollution filter or a UHC filter and simply screwed to the coma corrector or the to the T or tube of the crayford.
Ok did the mod to my brand new 40D.
There are no 3 filters to see because the UV/IR filter is a 2 filter assembly.
First photo modded with AWB, second pic with CWB, third pic HH10*10min unmodded, fourth pic HH 1*1.6Min modded.
Last pic i had to cut short because of guiding problems
Ok did the mod to my brand new 40D.
There are no 3 filters to see because the UV/IR filter is a 2 filter assembly.
First photo modded with AWB, second pic with CWB, third pic HH10*10min unmodded, fourth pic HH 1*1.6Min modded.
Last pic i had to cut short because of guiding problems
Nice one Mill, yes, only recently it suddenly dawned on me one filter was actually 2 stuck together. I have no idea why I didnt see that before
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