R:40min, G:60min, B:80min, x1.4 tele-converter, HPC-1
Impressive high resolution!
Exposure time: R=40 min, G,B=60 min, HPC-1.
31cm+HPC-1, LRGB quadcolor L=70min, R:40min, G:60min, B:60min
L:175min, R=G=60min, B=120min.
Feb. 11, 1997. Exposure time: R=G=80min B=100min, HPC-1.
31cm + HPC-1, L=80min, R:100min, G:80min, B:100min
31cm + HPC-1, L=70min, R:40min, G:60min, B:60min
31cm + HPC-1, L=80min, R:60min, G:60min, B:120min.
Compare the next LRGB image where R has been used for L-ch.
My first shot in this new Century.
L=225 min (5min x 45), R=60 min, G=80 min, B=120 min, Guided by ST-5.
Note: AO-7 is not used for this shot.
31cm + HPC-1, L:60min,R=G=B=20min.
31cm + HPC-1, L:60min, R=G=B=20min.
M65/L:70min, R=G=B=20min.M66/L:60min, R=G=B=45min
L by HPC-1 + 12 inch (31cm) Newtonian, 180min, RGB by C8 w/ F3 reducer (made by myself), R=20min, G=B=40min
L: 31cm + HPC-1, 80min, RGB: C5 + ST-7 R=G=B=20min, 2x2
L and RGB were taken at a same time by using two systems.
L:65min, R=G=20min, B=40min.
L: 60min (5min x 12) by C8 + AO-7 + ST-7E , RGB by 12 inch +
ST-7E image of NGC7331 is composited on the wide field image by HPC-1