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Content Count
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knobby last won the day on June 16 2013
knobby had the most liked content!
Community Reputation
3,630 ExcellentAbout knobby
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Rank
Astronomererer
Profile Information
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Gender
Male
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Interests
Astronomy ...
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Location
Essex
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knobby started following Narrowband integration time ?
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Hi all, I'm sure I've read this before somewhere but still unsure of the theory ... Am I correct in thinking that when stacking, 1 to 2 Half's the noise, then 2 to 4 Half's again, then 4 to 8 ... 8 to 16 etc. So going past 16 really needs a massive investment in time ? Also where does sub length come into this ? I use a ZWO 1600 pro and seem to get good results in my bortle 7 / 8 zone with 300 seconds at unity gain. Also, now sure that (as I've been told but wanted to see for myself ) that only Ha cuts through the Moon glow. Due to t
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sharp cap polar alignment help with ASI120MM
knobby replied to Leewfc's topic in Getting Started Equipment Help and Advice
Should be ok ... Try mid gain and about 1.5 seconds, works on mine -
Finally - My Coma is CORRECTED!
knobby replied to astro_john_palmer's topic in Essex Cloud Dodgers's Topics
Red -
Polar Alignment Options - electronic
knobby replied to Coriorda's topic in Getting Started With Imaging
You can make a Canon DSLR work with ascom / Sharpcap ... https://www.cloudynights.com/topic/657429-how-to-use-sharpcap-with-a-dslr/ -
Definitely the thought that counts We did this last year for a friend we lost to Covids partner. We did carefully research it and chose a random star near Cassiopeia ... that way they can look up most of the year and see roughly where it is. They were happy so money well spent.
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Astronomy sales during the pandemic. Update.
knobby replied to FLO's topic in Sponsor Announcements and Offers
I still don't get it ... We can't buy any astro gear because it's out of stock everywhere ... Yet it's still cloudy -
Astronomy sales during the pandemic. Update.
knobby replied to FLO's topic in Sponsor Announcements and Offers
You can also pretty much guarantee that Rother will be out of stock at that price. -
Indeed, very mixed feedback
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Astro biscuit @rorymultistoreydid a you tube video about them I guess they're really busy but keep trying
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Pelican (or Pterodactyl) - narrowband
knobby replied to knobby's topic in Essex Cloud Dodgers's Topics
Cheers John, the moon doesn't hinder the H but plays havoc with the S and O. For me anyway. -
OAG works well with a 72ED.
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PHD2 Multi Star Guiding - weird graph
knobby replied to stevepsheehan's topic in Discussions - Mounts
Looks like the Dec wasn't actually responding to guide commands ? Too low aggression setting ? -
Nice image the moon is very bright so it's hard to capture colour ... I believe people just boost the saturation in an editor to bring out what little colour there is.
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What camera ? I'm guessing a DSLR as you say ISO 800. Maybe try dithering or look at which ISO is optimum for your camera.