Re: anyone modded eos r successfully for astrophotography?
bc0428 wrote:
I am planning to remove the low pass filter of my eos r to pick up more Ha signals, don't have the luxury to buy another eos Ra
I modded an eos 500d before so technically I should be able to do so, just can't find any tutorials available online. Is there any?
Also, I am not sure if the structure is the same as DSLRs, so just to make sure the one on the sensor is the low pass filter? I also noticed some said removing it will bring moire pattern up and the dust removal function will be removed, is that the case?
Thanks in advance!!
The EOS Ra is the camera you need if you want to capture more Ha & Sul-II frequency and especially if you want to do it with a Full-Frame Mirrorless body with an RF mount (to take advantage of the lens technology in some of the new RF lenses). If the EOS Ra is too expensive and you can't justify the cost, you ought to consider getting an EOS RP modified. Since nobody is keen to ruin the warranty of an EOS R camera, nobody has done a mod of the RP and then discussed it online. But there are companies who charge for this service. You WON'T get the 30x magnification with the Magnify Feature though, as that feature is only on the EOS Ra. The seating of the EOS R sensor is going to be different to DSLRs. An EOS R (standard R model) might be the best choice at the moment since it has a 30MP sensor and offers a few more features than the RP.
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Altering the sensor and removing the AA filter is almost certain to result in Moire. I've seen some snap-on filters that can be used on R cameras but these don't remove the IR-filters on the sensor.
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The RP is known to be a little noisier than the R5... and yet the Ra is said to be very close to the R5 for low noise profiles. A "problem" that has been identified with the Ra is that some very bright subjects will produce color bloom with wider apertures when offset. It exists but I haven't been too concerned with it. Oddly enough, the Canon EF 24mm f/1.4L II USM lens vignettes strongly with the EOS Ra... yet this lens does not appear to do so with other EOS R cameras (including the new R6). I've found the EOS Ra to be a pretty reliable camera that offers ease of use and superb sensitivity to the H-Alpha and Sulfur-II line channels. It's canon's first Full Frame IR-Modified camera and it's also their first Mirrorless IR-Modified camera as well. If you need to modify a camera, perhaps consider an older DSLR that won't put you as much out of pocket if the procedure fails.
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In terms of general Astrophotography, I have found the EOS R6 to be quite a decent performer. Whilst it's not as sensitive to Ha/S-II channels as the Ra, it's VERY impressive for lowlight astro-related photography.