LDN 1082 - The Seahorse (jeromeroger)

LDN 1082 - The Seahorse

This is the second night of imaging with my new telescope Epsilon 160-ED. With a very fast ratio of F/D=3.3, this telescope is very reactive about any tilt, even if little.
I have identify that this tilt come from my camera ZWO. I will try soon to adjust the different screws of the camera.
I have also a problem of FLAT. When I use them, the final result is catastrophic ! So this image of the Seahorse you can see now has been made without FLAT !
I try to compensate with the PixInSight function : Dynamic Background Extraction / Correction Division.
(I may have a third problem : the type of filters that are perhaps not well calibrated for such F/D=3.3 ?)
The final image result is much better but not like I would like.
I am going to search the reason why the FLAT were bad !
So...for all this reasons (Tilt and FLAT), I have cropped the final image.

C'est la seconde nuit d'utilisation de mon nouveau telescope Epsilon 160-ED. Avec un F/D=3.3 aussi rapide, ce telescope est très réactif au moindre problème de tilt, même minime !
J'ai identifié que ce tilt provenait de ma caméra ZWO. J'essaierai bientôt d'ajuster les différentes vis frontales de la caméra.
J'ai également un problème de FLAT. Quand je les utilise pour le traitement, le résultat final est catastrophique ! En conséquence, cette image du Seahorse a été traitée sans les FLAT !
J'ai essayé de compenser avec la fonction de PixInSight : Dynamic Background Extraction / Correction Division.
(J'ai peut-être un 3ième problème : le type de filtres utilisés n'est peut-être pas adapté des F/D=3.3 ?)
L'image finale qui en résulte est bien meilleure qu'avec les FLAT, mais encore bien perfectible (cf. un léger halo circulaire Lumineux au centre)
Je vais cherché les raisons pour lesquelles ces FLAT sont mauvais.
Bref... pour toutes ces raisons (Tilt et FLAT), j'ai rogné l'image finale.

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Status	Basic success
Started	...
Astrometry.net job	8397547
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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LDN 1082 - The Seahorse

LDN 1082 - The Seahorse

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LDN 1082 - The Seahorse

LDN 1082 - The Seahorse

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