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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:
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.
The bubble nebula. Not much to add about the target itself as it is already popular enough.
A combination of HOO shot with the ASI1600MMC + Astronomik narrowband filters through the 200mm newtonian tube removed from the dobson base and put on the EQ6-R.
About 6h of exposure through the Oxygen filter and about 9h through the Hydrogen filter.
Clicking on the pictures will redirect to the astrobin images where you can watch them in full resolution.
Thanks for watching and clear skies to you too!
First view of the Sun for almost a month, but the wait was worth it. The large sunspot has split into 2 umbra, both within the same penumbra. Plage and filament activity nearby. There is a large prominence just above this on the oncoming limb and 3 other prominences on this limb. On the Western limb there is another even larger prominence. I will set up for WL and have a close look at the AR. Hope your skies are as clear as mine.
Both little used, 'as new' condition, selling due to change of camera.
Price incl. shipment: Ha: £99; CLS: £49
These are compatible with Canon 5D / 6D, etc, here are the links for details on these filters: