AL com

Stewart John Bean

Repeating this field on May 5th ( following my first observation on 28 April), Al Com is only just detectable with itelescope’s T14 106 mm refractor with a V filter. AstroImageJ gives an magnitude estimate of 15.0 but the S/N and S/B  are poor and the reference star is magnitude 11.9 – perhaps too bright to be the best choice.

However, using a Luminance filter it is still easily visible.