19-12-04 astrometry M33

Conditions were perfect the other night for imaging the Triangulum Galaxy, M33 from my back yard.  I could see Polaris over my neighbours’ houses and the constellation was almost overhead.   I had my usual sh*t show setting up and the only thing i ended up with was the last of my setup shots: 20 seconds at f/5.6 ISO 1600 with my 18-55mm lens fully zoomed.  I shot a full session with the 50mm lens after that but the focus was out.  Anyway, Astrometry confirmed that I was pointed to the right part of the sky.  which is between Triangulum and Mirach in Andromeda. In the image above from astrometry I added the “M33” text to show where it should be.

19-12-04 green_4359

Looking real hard at the area the eye of faith says there’s a smudge but really nothing to be sure of. M33 is just a bit dimmer than M110 which shows up as a puff in shots taken with my 50mm lens 60 seconds f/3.5 ISO 800.  So I was more or less exposing the same but for only 1/3 of the time.

So, for next time: check that the battery is in the camera(!); make sure the headlamp works; remember to pre-focus the 50mm lens and tape it; check that all the screws are tight on the mount and tripod; and try for 60 seconds, f/3.5 ISO 800 with the 50mm lens.

UPDATE: processing the image a bit more subtly with something called Rawtherapee I’m morally sure there’s a faint puff at the right spot so next clear night should do it. I can still see it in the cropped shot below but mostly because of the star patterns around it.
19-12-06 IMG_4359_rawtherapee


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s