Category: Deep Sky

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Further on M27

Maybe this is not a very good object to practise Ha imaging? I’m not sure what the main consistentency is of this object…. the outer halo does not show very well, and also all blue parts are not visible. I guess this is a work in progress.

Anyhow this is a test object just to get my SGP and automated focusser / filter wheel working. That doesn’t go vbery smooth. I lost a few hours last evening under a clear sky, tampering with the PegasusAstro focuscube, trying to get it working with SGP’s autofocus. In short: it’s not working yet! The picture below is M27 with 178 minutes of H-Alfa.

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M27 first use of H-Alfa

I could image this object for a few clear nights. After all summer travelling and garden work, I could finally do some imaging again. This was not only the first use of an H-Alfa filter narrowband, but also new equipment: I switched laptops, so needed to re-install all software and needed to get all hardware working on it. That took me two hours. Also an Starlight Express automated filter wheel, and a Pegasusastro Focuscube were used for the first time.

M27 Esprit 120mm F5, 63×120 Ha, 10x120s RGB, cropped
M27 63x120s Ha only

I have some issues getting all the Ha detail (the internal structure and the outer halo) also visible in the color RGB combination.

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