Broadband versus narrowband on the Jellyfish Nebula скачать в хорошем качестве

Broadband versus narrowband on the Jellyfish Nebula

I wanted to compare a broadband image of the Jellyfish nebula to that of narrowband, so I set two telescopes up, one with a one-shot-color camera for the broadband and the other with the monochrome camera for the narrowband filters. The results are at the end of the video, rather spectacular if you ask me. IC 443 (also known as the Jellyfish Nebula and Sharpless 248 (Sh2-248)) is a galactic supernova remnant (SNR) in the constellation Gemini. Its distance is roughly 5,000 light-years from Earth. The main nebula (golden in color in this image) has the appearance of a 'Jellyfish', hence the nickname. The supernova happened sometime between 3,000 and 30,000 years ago. Also seen in the image to the lower right is a large gaseous hydrogen cloud emitting red light from radiated excited hydrogen atoms. This is a narrow band image. I combined the different narrowband sub-images into a modified Hubble palette using a blend of Ha and S2 for the red channel, S2 for the green channel, and O3 for the blue channel (which didn't have much data associated with it). Equipment: Telescope: Orion ED80 Triplet Refractor Reducer: Orion 0.8x for short focal length refractors Focal length: 384mm Focal ratio: f/4.8 Camera: ZWO ASI 1600 mm Pro (monochrome) Filters: Baader Ha 3.5 nm, O3 4nm, ATIK S2 7nm. Subframes: H-Alpha: 36 x 300 sec S2: 18 x 300 sec O3: 26 x 300 sec Total integration time: 6hr:40mn Camera Gain ... sensor temp: 139 ... -10°C Mount: Celestron AVX Capture Software: N.I.N.A. Beta 2.016 nightly build Guiding: PHD2 Stacking: Deep SkyStacker Post-processing: PixInsight, Photoshop CC, and TOPAZ DeNoiseAI Music from the YouTube audio library ... "Imperial Forces" - Aaron Kenny My weather and nature website: https://www.savannahpat.name My Astronomy website: https://heavenlybackyardastro.com/ My Astronomy Facebook page:   / heavenly-backyard-339391973366228   My Weather and Nature Facebook page:   / pat-prokops-weather-and-nature-page-134392...   Chapters: 0:00 Intro 0:42 The Setup 1:53 The Jellyfish Nebula 4:02 The narrowband ED80T telescope 5:58 Merging the narrowband channels 9:36 Conclusion 10:26 The Final Pictures