M27 brief test of my new Dobson 12" (Wanni)

Celestial hemisphere: Northern · Constellation: Vulpecula (Vul) · Contains: Dumbbell Nebula · M 27 · NGC 6853

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M27 brief test of my new Dobson 12"

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M27 brief test of my new Dobson 12"

Only a brief test for my new (2nd. hand) Sky-Watcher collabsible Dobson 12" GoTo

A) Orig.: Weather only permitted 4 subs. of 30 sec. exposure. But main emphasis was to get some

experience of tracking precision, mirror quality and fit to my CCD cam geometry.

B) added 12 frames. Because of field rotation and repositioning : image crop

Test GoTo function :

After a two star alignment, M27 was within the CCD Cam window, only half off-center!

Overall I am positively surprised and more elaborate tests will follow.

Also there seems to be no real requirement for a Coma-corrector-lens.

(At least for the ATIK 383 build in KAF 8300 CCD chip size)

Main reason for buying this telescope was for direct visual observing fun!

( I still keep my LX200 for long-time exposure and guided imaging.)

Original
Final
B

Astrophotography with Dobson

Deep Space : Nebulae

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	3363512
PixInsight job	P706KHH3AOVE775XZDW8Y5W55RR33FPN
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	19h59m40s.350
RA (top/left)	20h00m50s.624
RA (top/right)	20h00m17s.472
RA (bottom/right)	19h58m29s.725
RA (bottom/left)	19h59m02s.437

Dec (center)	+22°44′03″.20
Dec (top/left)	+22°58′56″.41
Dec (top/right)	+22°23′45″.96
Dec (bottom/right)	+22°29′08″.62
Dec (bottom/left)	+23°04′20″.55

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M27 brief test of my new Dobson 12"

M27 brief test of my new Dobson 12"

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M27 brief test of my new Dobson 12"

M27 brief test of my new Dobson 12"

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