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Old 11-08-2018, 09:31 PM
John Hothersall's Avatar
John Hothersall
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John Hothersall is offline
 
Join Date: Apr 2007
Location: Thornlands, Brisbane.
Posts: 1,346
Bug, Ant and Box planetary nebulas et al

SPX350 F9.1, ASI290 uncooled, Astronomik UHC+Baader RGB filters.

Seeing was variable for this lot but Scorpius Bug nebula came out very well. The Ant nebula in Norma Menzel 3 showed decent detail within considering the avg seeing.

The Box nebula ngc6309 in Oph has 2 bipolar components and IC2553 has a box like shape in Carina with bad seeing. The planetary in the Corvus square ngc4361 at 11th mag and 2 arc min diameter was very faint and needed lots of stretching, colour was barely visible.

The 12bit ASI290 is good at imaging high surface brightness/concentrated objects like planetaries but you cant beat a cooled 16bit camera for the faint stuff like the elusive halos.

Mars is ruined with dust storms so I am trawling the PN's in Sco/Sag/Oph with the ASI planetary cmos.

Regards, John.
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