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NGC7023 - Iris Nebula


sabin_fota

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Date: 11-18-19.aug.2012

Location: Muntele Mic, Romania, great sky, almost pitch black

Telescop: Megrez 90mm APO, f/6,2 la F=558mm

Camera: Canon 50D unmoded, uncooled, P-FLT4 reducer at F=432 mm controled by APT

Filter:

Guiding: TS 8x50 cu Alccd5 controlată de PHD guiding

Mount: CGEM

Exposure: 62x300" - 310'

ISO: 800

post-18974-0-13030000-1345837111_thumb.j

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That really is a very nice picture, especially nice to see such a great range of colour in the dust clouds, not easy to achieve with a 12 bit DSLR.

As for modding the camera though, for this particular nebula it wouldn't make much if any difference, as the mod only removes a filter which blocks near infra red light, such as found in emission nebulae. The Iris is a perfect example of a reflection nebula, where the dust clouds are not glowing of themselves, rather they are lit by the surrounding star field to spectacular effect. Modding the camera will yield great results on objects like M42, M27, NGC281 etc that have bright emission clouds within them.

Again, great result, well done!

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That really is a very nice picture, especially nice to see such a great range of colour in the dust clouds, not easy to achieve with a 12 bit DSLR.

As for modding the camera though, for this particular nebula it wouldn't make much if any difference, as the mod only removes a filter which blocks near infra red light, such as found in emission nebulae. The Iris is a perfect example of a reflection nebula, where the dust clouds are not glowing of themselves, rather they are lit by the surrounding star field to spectacular effect. Modding the camera will yield great results on objects like M42, M27, NGC281 etc that have bright emission clouds within them.

Again, great result, well done!

Thanks for the feedback, it means a lot

I think that the modded/cooled camera it was a big help to reduce the noise, the signal in this reflection nebula is huge and for this part the unmodded camera did a very good job

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