With a nod to sci-fi author Vernor Vinge, this site is dedicated to the deepness in the sky -- in NJ USA and elsewhere.  More than ever we need to see the wonders of the celestial sphere to help our perspective on this planet. Reducing light pollution to restore dark to the night sky can inspire us, and is critically important to ecosystems and wildlife habitat, and the very survival of birds, insects, other animals, and plants.

I aim to show that doing astronomy through telescopic photography is possible -- even in New Jersey! -- despite the challenges of sky glow from excessive outdoor lighting. It takes good optical and electronic equipment and technique, patience and motivation. I hope you join me in this quest. -- Rex Parker, PhD

See my astronomy club at www.princetonastronomy.org


Images with "NJ" in filename were acquired from my home observatory, most others came from Chile. NJ Telescope: 12.5" f6.7 AG Optical iDK Cassegrain reflector on Paramount MX with TheSkyX, Maxim-DL, and ACP software. Astro cameras (CMOS): ZWO ASI071MC (color) & ASI2600MM (LRGB/Ha). Exposures were typically many hours total for each with 10-20 min subframes.

Images from the Chilean Andes were from Cerro Tololo (CTIO) or since 2021 El Sauce Observatory (30 deg S lat.). Telescopes: 16" R-C at CTIO, and 24" Planewave CDK at El Sauce (thanks to S Watson, M Hanson, and S Mazlin). Cameras (CCD): FLI & SBIG KAF-16803.  A few images are from Mt Lemmon AZ, the 32" Schulman telescope (thanks to A Block).

Click on panels below

Nebulae

Nebulae

2021-07-12

Both emission nebulae and planetary...

Galaxies

Galaxies

2021-07-12

island universes of billions of stars

Star Clusters

Star Clusters

2021-09-09

vast "cities of stars" within our galaxy...

Supernova Remnants

Supernova Remnants

2022-02-10

The spectacle after a massive star...

Solar System

Solar System

2021-11-21

planets, moons, comets, transits

Backyard Observatory

Backyard Observatory

2022-04-05

where the data come from

How-to Videos by Rex Parker

How-to Videos by Rex Parker

down to earth talk about stellar subjects...

Mt Lemmon Astroimaging Workshop

Mt Lemmon Astroimaging Workshop

slide show from Tucson field trip

The Speed of an Asteroid

The Speed of an Asteroid

2022-04-03

Calculated using trig and astroimage data...