Interstellarum Deep Sky Guide - Field Edition new and returning The patterns you see in

The patterns you see in the focused and out-of-focus star images tell you whether your telescope is aligned for maximum performance

Hydra’s showcase object is the Southern Pinwheel Galaxy

Spherical mirrors are relatively easy for the ATM to make and null test to a high level of accuracy

Shakhbazian groups

Interstellarum Deep Sky Guide - Field Edition new and returning The patterns you see inAuthors: Ronald Stoyan and Uwe Glahn The same team who created the interstellarum Deep Sky Atlas and the interstellarum Deep Sky Guide, Desk Edition presents this wonderful companion, interstellarum Deep Sky Guide, Field Edition, printed on special laminated water resistant foil paper for use while observing out in the field. Stoyan and Glahn carefully selected objects from the Deep Sky Atlas, presenting them as colored composite Palomar Observatory