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16.7 MEGAPIXEL

Astronomia View gallery (2 photos)

M45 sent on 17 Febbraio 2026 (0:12) by Minaz. 8 comments, 150 views.

Le Pleiadi in un cielo non proprio bellissimo. 40 scatti x 180 sec - Zwo 2600 Mc duo air - Zwo FF80 apo - elaborazione Siril

View High Resolution 16.7 MP

5 persons like it: Alberto Tirri, ForeverYoung, Giovanni Soligo, Mnardell, Sandro Zambon

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Minaz

sent on 17 Febbraio 2026 (0:20) | This comment has been automatically translated (show/hide original)

I ask those who know more than me.... and there are many of you...
Apart from the questionable image quality, I can't figure out what causes the various circles that appear in the image.
I think it's a problem with the telescope (is it a quadruplet - internal reflection?), but I'm not sure.
Does anyone have any ideas and possibly can they propose a solution?
Thanks in advance

Dokker

sent on 17 Febbraio 2026 (7:06) | This comment has been automatically translated (show/hide original)

The sensor is dirty

Gp70	sent on 17 Febbraio 2026 (8:56) \| This comment has been automatically translated (show/hide original) You need to learn how to make and handle Flats to eliminate defects due to dirt on the sensor. Hello GP

Minaz

sent on 17 Febbraio 2026 (9:34) | This comment has been automatically translated (show/hide original)

Thank you so much, provvedo!

Bares

sent on 18 Febbraio 2026 (18:32) | This comment has been automatically translated (show/hide original)

dust on the slide that protects the sensor, take a look and clean it with spatulas that you find on Amazon, and then make the flats.... Hello

Minaz

sent on 19 Febbraio 2026 (19:26) | This comment has been automatically translated (show/hide original)

Thanks also to Bares
As far as flats are concerned, is it worth spending on the purchase of "pre-packaged" equipment (which sometimes really costs a lot!) or can you make do with it by hand?

Alex.casale

sent on 20 Febbraio 2026 (10:08) | This comment has been automatically translated (show/hide original)

I use a graphic tablet with sheets in front, little expense so much yield haha!

Minaz

sent on 20 Febbraio 2026 (23:52) | This comment has been automatically translated (show/hide original)

“ I use a graphic tablet with sheets in front, little expense so much yield haha! „

I think it's a great idea...... I'll experiment ;-)

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Some comments may have been automatically translated with Microsoft Translator.