Arp 217 (ngc3310) LHaRGB version

[wimvb]

I finally got an opportunity to collect Ha (under a nearly full moon). This is probably the final version for this galaxy. Nights are getting shorter very fast up here, and we only have one more month before imaging season ends.

Equipment:

• Skywatcher BK MN190 DS on AZ EQ6 mount
• ZWO ASI174MM-Cool camera at -20 C
• Guiding: ST80 + ASI120MM
• Control software: INDI + Ekos, PHD2

Acquisition details:

• Red: 25 x 180 s
• Green: 18 x 180 s
• Blue: 17 x 180 s
• Lum: 122 x 120 s (at low gain)
• Ha: 50 x 240 s (at unity gain)

All in all about 10.5 hours of integration time, collected under Bortle 4 skies.

 

(click on the image to see a larger version)

Inverted luminance image, showing the very weak tidal structure of this galaxy. The square blob at the top is due to microlens diffraction.