Urban Imaging

This page provides links to various images taken from an urban setting. It can be a challenge to pull detail out of objects that are buried in light pollution. Various techniques were used to pull the detail out of urban light pollution and each is detailed in the table below each image. All of the techniques share one thing in common in that they take sky limited exposures. That is the individual sub-exposures are long enough so that photon noise from the sky background is the dominant noise source. With the subs sky limited, all that is left is to take many sub-exposures and stack them. This effectively means that long exposure times compensate for the added noise due to the bright sky background. It really did not matter whether high or low ISO was used or the focal ratio as long as the total integration time is long and each sub-exposure is sky limited.
M45 in Esprit 120 with fixed optics
M51 Supernova
M101 Supernova
Eskimo Nebula
Urban M45 in Esprit 120
M42 in Esprit 120
Sirius A & B
M22 and Saturn
M108 & the Owl Nebula
Leo1 in SkyWatcher Esprit
Urban M1
Urban M42 with bright Moon in sky
Urban M81 & M82 with Esprit 120
Urban M64
NGC 4993
Urban Crescent Nebula
Urban NGC6992
Urban Leo1 reprocessed
Urban IC-1795 - Fish Head Nebula
Double Cluster
Urban Comet C/2017-T2 PANSTARS
Urban M42 Test Image
Urban M74 Test Image
Urban M42, 2020
Urban M78
Urban NGC4565
Urban Rosette Nebula
Urban NGC3718
Urban NGC5982
Urban Whale & Hockey Stick Galaxies
Urban NGC4762
Urban M63
Urban M3
Urban M5
Urban Crescent Nebula with Optolong L-eNhance filter
Elephant Trunk Nebula with Optolong L-eNhance filter
Elephant Trunk Nebula with Optolong L-eNhance filter take 2
Wizard Nebula
NGC6960 2.5 hour exposure
The core of the Heart Nebula
Urban Bubble Nebula
Urban Cave Nebula
Urban Soul Nebula
Urban California Nebula
Urban Squid Nebula
Urban Double Cluster with Zwo Camera
Urban Abell 85 / CTB1
Urban IC417
Urban Filtered M42
Urban Orion's Sword
Urban Rosette Nebula
Urban Horse Head
Urban NGC2903
Urban IC443 - Jellyfish Nebula
Urban M108 with almost full Moon in sky
Urban NGC4725
Urban M51
Urban Heart Nebula mosaic
Urban Abell-6 & HFG-1
Urban Abell-71
Urban Witch's Broom Nebula (NGC6960)
Urban SH2-224
Urban M1 with filter
Urban M42 region
Urban Leo Triplet with Zwo camera
Urban M106
Urban RGB M101
Urban M87 with Jet
Urban High Resolution M57
Urban Cresent and SoapBubble Nebulae
Urban Pickering's Triangle
Urban Wizard Nebula
Comet C/2022 E3 (ZTF)
Urban Tadpole Nebula
Urban Thor's Helmet
Urban NGC4565
Urban M3 with Zwo Camera
Urban Leo Triplet with additional data
Supernova 2023ixf
Urban HorseHead Processes with PixInsight
Hercules Galaxy Cluster (Abell 2151)
Urban M51 Reprocess
Urban M33