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Do you know wich is the most used duo filter for this convination Redcat51/ASI183MC?. An also wich one do you think has the better results for this convination in you opinion.? Im living in a city with Borthle 8 or 7. Any advice??
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I personally use SvBony's cheap and good SV220. It has Ha and OIII, at 7nm each. You have such severe light pollution, you might want it tighter. Keep in mind, with dual narrowband filters, you need much longer exposure times. At 2 arcsec/pixel, you might need autoguiding to approach the 5-10min subs you need, especially for dimmer targets. My image of the Sadr region was taken in bortle 5 with 300 second subs at 1.6 arcsec/pixel, the Sadr region is pretty bright and 300sec was enough. For HaRGB for galaxies, 300sec was not enough for Triangulum. |
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I use it with an idas NBZ and gives good results in bortle 5-6. The Nbz has no halos, the reason I switched from the optolong l extreme. I found the standard Nbz works very well with my rasa 8 a fast system but also performs well for F4 to 5. |
