NGC 7243 cluster in Lacerta with 135mm lens and Canon 20Da for 5 minutes at f/2.8 and ISO 400 - simulates 7° binocular field.
The loose open cluster NGC 7243 in Lacerta. It is in a rich field and hard to distinguish from the field here but visually it looks more impressive in the eyepiece. The bright star at left is Alpha Lacertae. North is up in this field. This is a stack of 5 x 8-minute exposures with the Canon 5D Mk II at ISO 800 through the Astro-Physics Traveler apo refractor at f/6 with the Hotech field flattener. Taken from home on a very clear night August 1, 2019. Star spikes added with Astronomy Tools actions.
The emission nebula NGC 7380, aka the Wizard Nebula (at left) with its associated star cluster also known as NGC 7380. Delta Cephei, a famous double and variable star, is at right, barely resolved here. Delta Cep is the prototype Cepheid variable star, a prime tool for measuring cosmic distances. This is a stack of 10 x 6 minute exposures with the filter-modified Canon 5D MkII at ISO 800 through the TMB 92mm apo refractor at f/4.4 with the Borg. 0.85x field flattener/reducer. Taken from New Mexico, Nov 18, 2014.
