Making sure a telescope is accurately aligned is a very important step when doing astrophotography. Autoguiders are small sensor cameras that track stars so the astrophotographer can monitor drift alignment before taking their exposures.
Complete optical fibre fed echelle spectrograph for astronomy:-Fibre Injectino & Guiding Unit F/6 -echelle spectrograph R>10000 (including 85mm f/1).... Learn MoreModel#: ES0007
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