Fichier:Heart Nebula (2020-08-11).jpg

Fichier d’origine(4 637 × 3 495 pixels, taille du fichier : 9,58 Mio, type MIME : image/jpeg)

Ce fichier et sa description proviennent de Wikimedia Commons.

Description

Description
English: Heart and Fishhead nebulae also includes: Cr30/Mel16/IC1824/NGC1027, IC1831, LBN646-48,50,55-57, and LDN1356,59-73.

Total integration: 43.75 hours/2625 minutes (136x7m = ~16h for Ha + 92x7m = ~11h for O3 + 147x7m = ~17h for S2).

Camera: QHY163M (16mp mono) CMOS cooled to -15 degrees C. Telescope: Stellarvue SV70T triplet apochromat refractor @ f/4.8. Reducer: SFFR70-APO Mount: Paramount MyT. Filters: Astrodon 5nm Ha, 3nm O3, 3nm S2. Software: TheSkyX Pro, SharpCap, PixInsight.

http://ram.org/ramblings/cosmos/
Date
Source Travail personnel
Auteur Ram samudrala
Author's comment about the photo:
InfoField
The Heart nebula region is about 7500 light years away from Earth in the constellation Cassiopeia. The 330 light year diametre complex contains the eponymous emission nebula (Ced7/Cr26/IC1805/LBN654/Mel15/Sh2-190) shaped correspondingly, along with a separate region labelled the Fishhead nebula (Ced6/IC1795/LBN645/NGC896), which was the first part to be discovered. The nebula's shape and distinct signal is due to a cluster of stars in the middle in an area that could appropriately be called the tendrils of creation.

One of the more striking aspects of this nebulosity is the number of dark nebulae (~15) contained within it (LDN1356 and LDN1359 through LDN1373) many of which I've tried to highlight especially on the Ha only image. There's also a small open cluster to the right (Cr30/Mel16/IC1824/NGC1027). One of the cooler features is the ring nebulosity in the centre which you can make out if you look closely, which is like a second (or more likely separate) shell of gases being pushed out.

This capture is part of my "make up for being a newbie" series, where usually once a year I revisit one of my very first images and redo it with the latest capturing and processing techniques that I've learnt. In this regard, the Heart nebula complex represented a lot of firsts for me: it was one of my very first astrophotography images, my first narrowband image, the first colour image with the SV70T scope, and it was done on my first mount. This version which I did back in 2017 had a total of integration of 4.7 hours, so this current version has almost ten times as much information going into it.

There's ~44 hours of captured data going in this version and I think even though the gains are incremental, I was able to bring out additional background nebulosity and details, as well as reduce noise, particularly in the Ha only image which I thought turned out really good: deconvolution actually worked like I thought it would for the first time and I was able to achieve a balance between sharpening and noise reduction. When I first started redoing this, the moon was half full so I decided to capture S2 data first and I was off a bit in my framing which I only corrected after my first session (there's a seam barely visible if you can spot it). I was able to use it but it is why I have the most amount of data using this filter since I wasn't sure if the first session would be useable in the end. Overall, I would have to say this is the first image where everything came together nicely in terms of processing. Take for example the ring nebulosity, it's missed in many images of this target or not pronounced (my previous image doesn't have it at all) but it shows up here nicely.
Lieu de la prise de vue43° 16′ 19,57″ N, 79° 01′ 20,59″ O Kartographer map based on OpenStreetMap.Voir cet endroit et d’autres images sur : OpenStreetMapinfo

Distinctions

Image remarquable

Wikimedia CommonsWikipédia

Ceci est une image remarquable sur Wikimedia Commons (Images remarquables) et est considéré(e) comme l'une de nos meilleures images.

 Ceci est une image remarquable sur la Wikipédia en anglais (Featured pictures) et est considéré(e) comme l'une de nos meilleures images.

Si vous avez une image de qualité similaire qui peut être publiée sous une licence compatible, vous pouvez l’importer, y apposer le bandeau de licence adéquat, et la proposer.

Conditions d’utilisation

Moi, en tant que détenteur des droits d’auteur sur cette œuvre, je la publie sous la licence suivante :
w:fr:Creative Commons
paternité
Ce fichier est disponible selon les termes de la licence Creative Commons Attribution 4.0 International.
Vous êtes libre :
  • de partager – de copier, distribuer et transmettre cette œuvre
  • d’adapter – de modifier cette œuvre
Sous les conditions suivantes :
  • paternité – Vous devez donner les informations appropriées concernant l'auteur, fournir un lien vers la licence et indiquer si des modifications ont été faites. Vous pouvez faire cela par tout moyen raisonnable, mais en aucune façon suggérant que l’auteur vous soutient ou approuve l’utilisation que vous en faites.

Légendes

Ajoutez en une ligne la description de ce que représente ce fichier

Éléments décrits dans ce fichier

dépeint

43°16'19.567"N, 79°1'20.593"W

Historique du fichier

Cliquer sur une date et heure pour voir le fichier tel qu'il était à ce moment-là.

Date et heureVignetteDimensionsUtilisateurCommentaire
actuel25 novembre 2021 à 12:53Vignette pour la version du 25 novembre 2021 à 12:534 637 × 3 495 (9,58 Mio)Ram samudralaUploaded own work with UploadWizard

La page suivante utilise ce fichier :

Usage global du fichier