Take thecaldwell challenge

1 NGC 6624 We’ll start with globular cluster NGC 6624 located in the northwest corner of the Teapot, 0.8° southeast of mag. +2.7 Kaus Media (Delta (δ) Sagittarii). Shining with an integrated magnitude

We start with open cluster IC 4756, right at the top of the tail, located 4.2° west and 0.9° north of mag. +5.6 Alya (Theta1 (θ1) Serpentis). It’s a large, bright object perfectly suited for a small t

For those of us in the Northern Hemisphere, the lack of true darkness in the middle of the year doesn’t make astronomy that easy to do. The planets are good at cutting through slightly brighter skies,

1 Jul 00:00 AEST (30 Jun, 14:00 UT) 15 Jul 23:00 AEST (13:00 UT) 31 Jul 22:00 AEST (12:00 UT) The chart accurately matches the sky on the dates and times shown for Sydney, Australia. The sky is differ

Stephenson 1 is a cluster that deserves to be better known. Delta (δ) Lyrae is a very wide (10-arcminute) and bright (mag. +4.3 and + 5.6) double star with a stunning colour contrast. It’s not a true

Scientists working with the James Webb Space Telescope have likened this object to an ice cream sundae. Others examining it with the now-defunct Spitzer Space Telescope dubbed it the cosmic tornado. T