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Showing results for tags '3nm'.
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This has been my project since the start of this season and now I think I´ll just leave it... for now I started last season (with a longer FL) but didn´t like how my Baader O3 filter matched the Astrodon Ha filter, so now I had to get a 3nm O3 as well. This is a total of: 60*5 minutes of 3nm Ha 114*5 minutes of 3nm O3. Shot with a ZWO ASI1600MM-Cool and a Canon 300/4L IS tele lens. The lens suffers from bad star shapes in the corners but I managed to get it decent anyway. Didn´t want to stop it down from f/4 either. Combined as a semi-RGB (or what to call it) from R=Ha, G=70%O3+30%Ha, B=O3. Processed it as LRGB using a combined Lum from 60% Ha L and 40% O3 L. I am really happy that I finally feel satisfied with a target! Usually I just get restless and move on when half of the data is collected. Hope you like it!
THIS ITEM HAS NOW BEEN SOLD. This listing is for my personal narrowband filters (Kayron from Light Vortex Astronomy). They are the Astrodon Hydrogen-Alpha (HA), Oxygen-III (OIII) and Sulphur-II (SII) 3nm 1.25" narrowband set. These are considered the highest-end narrowband filters money can buy, able to produce images of exceptional quality and incredible sharpness, cutting through a vast amount of light pollution. The 3nm variants featured here are fantastic for pulling out fine nebulous structures clearly above background. For more information, please see Astrodon's website: https://astrodon.com/products/astrodon-narrowband-filters/ Please note that these three filters together currently retail at just over £1,710 from UK suppliers, €2,180 from European suppliers or $1,690 from US suppliers. Payment is preferred via bank transfer but PayPal is OK with an extra 2.9% to cover PayPal fees. I'll cover postage to you via tracked Courier. I welcome any questions you may have regarding this listing. Thank you for looking.
Sadly, this project is currently stalled by the atrocious weather but at least I have had one uninterrupted night of imaging to start the ball rolling! I'm aiming for a bi-colour rendition combining Ha and OIII data at 3nm. I have a lot of data capture to go but it's a fair start. Image Stats Mount: Mesu 200 Telescope: Sky-Watcher Esprit 150 ED Pro CCD Camera: QSI 683 WSG-8 Sampling: 1.04”/pixel Guiding: OAG/LodeStar Filter: Astrodon 3nm Ha Exposure: 10 x 1800 sec Date: 31/07/17 Calibration: Bias, Darks & Flats Full Frame Cropped Frame
Damn you Astrosweden for having a Black Friday sale!! I had previously told myself that I could never justify the cost of 3nm Astrodon even if they are great. But how can I resist when they are half price? 355 Euros for a 1.25" 3nm Astrodon Ha-filter was just too good to miss. NO more Christmas gifts for me now...
I finally managed to get my dual rig working thanks primarily to @Patrick Gilliland. This meant I could try out the Chroma 3nm filter in my Moravian G2-8300 camera attached to my Williams Optics Star 71. Mount is the Mesu 200. The target is the Eastern Veil. This is 19 x 1200s (= 6 hours 20 mins) - processed primarily in PI.