IC1795 Fish Head Nebula Ha / Oiii / Sii first time dithering
Posted: Sat Sep 28, 2019 4:32 pm
Rather unexpectedly the weather cleared last night so rather than going to bed went out to the observatory to have a play with the new option for dithering as I gave never dithered before with SharpCap due to the loss of long exposures every 4 to 5 frames. The wind was a little higher than normal so tracking was a little worse than usual as it got up to 0.76 total error at the one point were normally it sits down between 0.3 to 0.4 arc seconds.
The target was the Fish Head which to me is the safer name as it looks way dodgier than that.
Equipment
Avalon M-UNO mount + EQDirect cable
APM LZOS 780/130 refractor + Riccardi 1.0x Flattener
Altair 60mm Guidescope + GPCAM290MM Guide Camera
Imaging Camera ASI1600MM-Pro at -20c
Filters 6nm Astronomik Ha / Oiii / Sii
Software Sharpcap Pro/ PHD2 / Stellarium / EQMOD / Astro Pixel Processor + Photoshop CC
Exposures Ha 18 x 180s / Oiii 17 x 180s / Sii 18 x 180s gain set to 200 offset at 50 dithered every five frames.
Bortle 4.5 - 5.0
_19_09_27 - IC1795 Fish Head Nebula Ha_x18_Oiii_x17_Sii_x18_180s_200g_Dithered by Nick Davis, on Flickr
Thanks for looking.
Cheers
Nick
The target was the Fish Head which to me is the safer name as it looks way dodgier than that.
Equipment
Avalon M-UNO mount + EQDirect cable
APM LZOS 780/130 refractor + Riccardi 1.0x Flattener
Altair 60mm Guidescope + GPCAM290MM Guide Camera
Imaging Camera ASI1600MM-Pro at -20c
Filters 6nm Astronomik Ha / Oiii / Sii
Software Sharpcap Pro/ PHD2 / Stellarium / EQMOD / Astro Pixel Processor + Photoshop CC
Exposures Ha 18 x 180s / Oiii 17 x 180s / Sii 18 x 180s gain set to 200 offset at 50 dithered every five frames.
Bortle 4.5 - 5.0
_19_09_27 - IC1795 Fish Head Nebula Ha_x18_Oiii_x17_Sii_x18_180s_200g_Dithered by Nick Davis, on Flickr
Thanks for looking.
Cheers
Nick