unknown cluster

[raymo]

I took these subs the same night that I snapped 3766 [see previous post], but neglected to note the cluster's designation. It would have been in the vicinity of 3766.
15 x 3 secs @ 3200 and 15 x 3 secs @ 6400.
I'm still using JPEGs as I have all sorts of problems with raw files.
raymo

[noeyedeer (Matt)]

could it be ngc3532 c91 .. the wishing well cluster? nice pic too btw raymo

matt

(based on vacinity and this pic)which is inverted northern hemisphere and yours a lot more detail obviously but I can see the resemblance

[rcheshire (Rowland)]

In the vicinity of Eta Carina?

[noeyedeer (Matt)]

3532 isn't far from eta carina ... 2.5° or so. but it is around 5° away from 3766 ..

matt.

c97 is ngc 3766 ... the wishing well cluster is ngc3532/c91. added pic from the caldwell objects ... remove if it's an infringment ... matt ( also it does look more like a pincushion then a wishing well)

[mithrandir (Andrew)]

astrometry.net:

Field center: (RA H:M:S, Dec D:M:S) = (11:05:52.671, -58:46:45.843).
Field size: 58.4124 x 42.4166 arcminutes
Field rotation angle: up is -10.0738 degrees E of N
Your field contains:
NGC 3532

You only need about 20GB of free space to install it.

[raymo]

Thanks everyone; as soon as 3532 was mentioned my tired old brain
clicked. Andrew, I don't have 20Gb of space on the old laptop I use for astro, but I will put it on my desktop for when I might occasionally need it. Thanks for the heads up.
raymo

[mithrandir (Andrew)]

Originally Posted by raymo

Thanks everyone; as soon as 3532 was mentioned my tired old brain
clicked. Andrew, I don't have 20Gb of space on the old laptop I use for astro, but I will put it on my desktop for when I might occasionally need it. Thanks for the heads up.
raymo

You could get away with a lot less by only including a subset of the index files - the wider field ones. The build of astrometry.net that runs on Windows needs Cygwin, and the version that is online is a bit old. I'll check with Dustin (the author) and see about making a current build available.

[batema (Mark)]

Butterfly cluster.

[raymo]

Thanks again Andrew. Matt, I'm a bit confused; 3532 is the Black Arrow cluster[although my pic is a bit too deep to show the arrow well].
M6 is the Butterfly cluster, although I'm aware that some DSOs
have more than one popular name.
cheers raymo