17 abr 2026

m13

the gso203 workhorse


 


Finally put the refractor to rest and got out the 203. Still galaxy season so after the galaxies swung west, the big globulars rose. Good seeing with guiding rarely above 0,4"rms.

Big callout too for Frankin at setiastro.com. His SetiAstroSuitePro software should take most of the credit...

globular cluster m13 in hercules
atr533c on gso203    (best of) 70x4min @ hcg100


11 abr 2026

m94

 With apologies to all the residents of m94, note to self to do this properly. It needs loads more time. Hopefully then there'll be colour as well as the outer halo. Alas, the calima hit around midnight, after only 90 minutes. 

galaxy m94 in canes venatici
atr533c on gso203    26x4min @ hcg100

a bit more outer halo

Then added more sessions. This was 167x4min. It worked but there's some red haze in the background. Wondering if this is the poor quality ir filter...?






lan

                                                    

192.168.3.

astro1       1
astro2       2
cocina      19
cocina2     21
bmax-b4      5
z420       
13
z440        15

7 abr 2026

m82 m3

 Not the same session. One with sv220, one without. Always wanted to get the Ha of m82. This seemed to do it without the usual processing fight...

galaxy m82 el cigarro in ursa major
atr533 on sv550-122    70x4min @ hcg100

globular cluster m3 in canes venatici
atr533 on sv550    34x4min @ hcg100


6 abr 2026

sv550-122 focus

Filter

Step

Bin

Expose (s)

ir/ 260/nada

17

1

3

220/uhc

20

2

10

Filter focus routines with the 122/f7 in fields with few stars.
Current focus steps ~3010

the barren star field surrounding m82 needed...

... a bigger hammer than usual
this was 8s exposures
we settled on 10s 

one frame arriving

4 abr 2026

xeon cores

 Xeon CPU E5-2696 v2 @ 2.50-3-30GHz in a z420 museum piece: 12 cores, 24 threads. Not fast, just brute force with 128Gb DDR3 to play with. It beats my Ryzen 7 Beelink for astro processing at a fraction of the cost; and it does it while you wait. It also weighs thirty times more!

integration using 24 threads

z420 settings
Here are 70 fits frames calibrated and stacked in around 5 minutes... and processed in less than that. Fed up of staring at a comnputer screen!