My first SN !

[Malpi12]

Thanks to @robin_astro  for the alert of SN 2023ixf in M101.
Normally sn in galaxies far far away are only of armchair interest for me, being too dim for my current limited equipment.
However this one at about mag.11 was worth a try with my Canon 60d +135mm vintage lens on a fixed tripod.

 200 x 2sec subs gave me this image below. not pretty but it is there ! The comparison star magnitudes are from an AAVSO chart. Imagine my surprise when I found a bit of M101 as well in there.

[Malpi12]

 

On 27/05/2023 at 20:52, Malpi12 said:

Imagine my surprise when I found a bit of M101 as well in there.

Later, after some practice on stacking loadsa subs in DSS and tweaking in Gimp,
1000 subs takes a long time on my ancient windows 7 machine !

I spy spiral arms, (just !!) , but with 5 times as many subs as in previous post, I had expected a better signal

1000 x 2sec, Canon 60D,  135mm f2.8 vintage lens,  ISO800, 100 bias, no darks, no flats.

Crop of 703x874pixels from original 5292 x 3465 subs  and exaggerates the star bloat
which I think makes this equivalent to a 1000mm lens ?
[ 5292/703 = ~ 7.5,  then 135x7.5= ~ 1000mm ]

 

 

[callisto]

Excellent, well done 👍

 

Mark.