Two images of a large complex Active Region. Sunspots are classified according to a 3 letter code – for this region the classification is:
F – A group of spots that are bipolar that have spots with penumbrae on both sides of an elongated group. The group length is >15 degrees of heliographic longitude
k – Asymmetric penumbra, >2.5 degree in N-S diameter
c – Compact distribution – many spots between leader and follower with at least one mature penumbra.
Numerous light bridges can be seen crossing the dark umbral regions and a few umbral spots can be seen inside the dark umbrae.
I have used a two stage Lucy Richardson deconvolution process on the zoomed image to sharpen it up.
1000/102mm refractor (TeleVue x3 Barlow for close-up)
Baader Herschel wedge
Skyris 274m CCD camera with Baader UV/IR cut filter
Ioptron ZEQ25GT mount
Bag flats used to remove spots and dust.
Quiescent Region Filaments over 1 million km long in total – thats one big ribbon!
Also, a slightly squashed looking loop prominence
Used a bag flat to get rid of dust and Newton’s rings to good effect.
1000/102 Fraunhofer refractor
Solarscope 70mm DSF Hydrogen alpha filters
AstroHutech Hinode guider
Skyris 274m CCD camera
Ioptron ZEQ25GT mount.
Stacked in Registax 6
8 x mosaic panel
I started to image M51 a little while ago but only got 4 x 5 minute subs before the clouds came in – frustrated I gave up!
Its going to be a cloudy weekend here so I tried adding those 4 subs to my images of M51 taken about a year ago.
I think it has helped but I really need to get a bigger scope if Im going to get better galaxy images.
2 small spiral galaxies to the NE (if N is at the top) are IC 4263 and NGC 5169.
Also first use of drizzling technique in PixInsight to help improve resolution.
Canon 60Da with AstroHutech LPS filter @ ISO 800
Now a total of 65 minutes imaging.
Ioptron ZEQ25GT mount with SSAG/PHD guiding/dithering
This x 2.5 closeup has undergone deconvolution and Multiscale Median Transform processes in Pixinsight
Philip Harrington’s book “Cosmic Challenge” contains about 110 challenges for an astronomer.
No. 76 is to image as many sub-craters inside Clavius as possible. – This is my second attempt and its better, but could be much improved.
Smallest crater seen here is about 4 miles across
Skyris 274m CCD camera with red2c filter
TeleVue PowerMate x2.5 Barlow
Ioptron ZEQ25GT mount