Three Fathoms Observatory
Stewart Yeung

 

 

 

 

 

 

 

Current special features

Self-Guiding Techniques

 

1. Autodark the self-guider image to reduce noise around dim guidestars

Noise reduction in the self-guider can assist in guidestar identification by singling out potential guidestars from their surrounding noise.

Noise reductioin also avoids confusing the guidestar with the background noise during the actual guiding process.

 

M27 self-guided image

Ha:12 minutes ; RGB : 2 minutes each

(click for TIFF format)

L:8 minutes ; RGB : 2 minutes each

(click for TIFF format)

M1 self-guided image

Ha:12 minutes ; RGB : 8 minutes each

(click for TIFF format)

(L+Ha)(R+Ha)GB image

Ha:20 minutes ; RGB : 8 minutes each; L: synthesized from RGB

((click for TIFF format)