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The Essential Guide to Astronomy

Kunihiko Okano

I am a Japanese astrophotographer. Although my observatory is located in downtown Tokyo, I was able to capture deep sky images thanks to the great dynamic range of my 16-bit CCD camera and new image processing technology. Since 1990, most of these photos have been published in various astronomy magazines. These works were mainly taken using a 31cm (12 inch) Newtonian at home, but some were taken with a 20cm telescope (C8) carried to Australia and New Zealand. Nowadays, times have changed, and it is now possible to take pictures using telescopes located overseas using remote control. We started remote astronomical photography in 2023. The now widely known LRGB method was developed by myself and Robert Dalby in 1996. In agreement with Dalby, we named it "LRGB". Digital Development Processing (DDP) is also a technique I developed myself in 1995.

1–20 of 42 results

Editor's Choice

NGC 5907 with SN 2026kid

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By: Kunihiko Okano June 15, 2026

Astronomy Pictures: Sky & Telescope's Online Gallery

ESO138-IG29 & 30

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By: Kunihiko Okano May 19, 2026

Astronomy Pictures: Sky & Telescope's Online Gallery

NGC 5084

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By: Kunihiko Okano April 24, 2026

Astronomy Pictures: Sky & Telescope's Online Gallery

M61 galaxy

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By: Kunihiko Okano April 16, 2026

Nebula & Galaxy

NGC 3576 Statue of Liberty on a pedestal

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By: Kunihiko Okano March 3, 2026

Astronomy Pictures: Sky & Telescope's Online Gallery

NGC 3324

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By: Kunihiko Okano February 1, 2026

Astronomy Pictures: Sky & Telescope's Online Gallery

IC 434 Horsehead nebula

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By: Kunihiko Okano December 28, 2025

Astronomy Pictures: Sky & Telescope's Online Gallery

NGC 55

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By: Kunihiko Okano December 15, 2025

Astronomy Pictures: Sky & Telescope's Online Gallery

NGC1566 Spanish Dancer

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By: Kunihiko Okano December 10, 2025

Astronomy Pictures: Sky & Telescope's Online Gallery

NGC 246 and the binary central star system

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By: Kunihiko Okano December 1, 2025

Nebula & Galaxy

NGC 1365

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By: Kunihiko Okano October 12, 2025

Editor's Choice

M27 Dumbebell Nebula

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By: Kunihiko Okano September 17, 2025

Editor's Choice

NGC6744 and the long bridge to N6744a

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By: Kunihiko Okano August 20, 2025

Astronomy Pictures: Sky & Telescope's Online Gallery

NGC 6822 Barnard's galaxy

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By: Kunihiko Okano July 15, 2025

Astronomy Pictures: Sky & Telescope's Online Gallery

M 101 galaxy

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By: Kunihiko Okano June 28, 2025

Nebula & Galaxy

NGC 4945

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By: Kunihiko Okano June 7, 2025

Nebula & Galaxy

NGC 4631 Whale galaxy

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By: Kunihiko Okano May 26, 2025

Astronomy Pictures: Sky & Telescope's Online Gallery

NGC 3621

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By: Kunihiko Okano May 12, 2025

Astronomy Pictures: Sky & Telescope's Online Gallery

NGC 2997

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By: Kunihiko Okano May 5, 2025

Editor's Choice

NGC 6302 Bug Nebula

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By: Kunihiko Okano April 21, 2025

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