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Wednesday, May 28, 2014

Removing Light pollution Astrophotography Urban Astronomy

The moon and the stars no longer come to the farm. The farmer has exchanged his birthright in them for the wattage of his all-night sun. His children will never know the blessed dark of night.

 — Leslie Peltier in his autobiography

Comparison of original image and final one after removing of the light pollution – night photo of Golden Gate Bridge, San Francisco, California.

Light pollution Astrophotography Urban Astronomy

Photoshop instruction:

Step1: Select the Layers panel and then  duplicate the layer
Step 2: Filter -> Noise -> Median… (about 50 px)
Step 3: Filter-> Blue -> Gaussian Blue… (about 30px)
Step 4: Select original layer
Step 5: Image -> Apply image (Blending: Subtract; Offset: 40)
Step 6: Delete the duplicate layer

See for example video in my other post Comet 103P/Hartley 2 from New York City

Note, that Astronomy Tools has more sophisticated methods to remove light pollution, or you can do some variations of such methods (it depends from size of you original image). You also can apply it only for part of original image.

The other way to remove light pollution is using multiple images, see for example my other post M42 Orion Nebula using iOptron SkyTracker in NYC

Tuesday, May 13, 2014

Astronomy Green Laser Pointer

Astronomy Green Laser Pointer is very useful tool to pointing out stars on the sky for lecture on night sky. It makes easy to share the sky knowledge with others during the stargazing.

Astronomy Green Laser Pointer
Green laser pointer
Laser pointer for astronomy
Laser pointer
Laser Pointer astrophotography Canon 60Da Cassiopeia constellation

Friday, May 9, 2014

Moonlight Astrophotography

Spring moonlight. This photo made during lunar eclipse in Brooklyn.

Spring Moonlight Astrophotography
This photo made in Iceland

Moonlight Northern Light Orion Astrophotography
Total lunar eclipse

Total Lunar Eclipse and Starry Sky
Aim for the moon. If you miss, you may hit a star. - W. Clement Stone

Supermoon wide field astrophotography canon 60da

Monday, April 28, 2014

Mystic Seaport Connecticut - Astrophotography Landscape Tourism



I like to get my camera and tripod to my vacation, find dark place and make photo of night sky.  I don’t know exactly how to call it hobby – probably astrophotography night landscape tourism. These are photos from Mystic Seaport, Connecticut. 

Mystic Seaport Astrophotography - Night tree - Canon 40D, Canon EF 16-35mm f/2.8L II USM

Mystic Seaport - night view
Night Sky Mystic Seaport Astrophotography
Astrophotography Night Landscape Mystic Seaport Connecticut
Astrophotography Landscape Mystic Seaport Connecticut
Starry Night Mystic Seaport Astronomy

Seaport Mystic Bridge at night
Mystic seaport nightscape Connecticute - Canon EF 16-35mm f/2.8L II USM

Astrophotography Nightscape Connecticut Mystic Seaport



Saturday, April 26, 2014

Dew-Not Astrophotography Dew Remover

One of the problem for night photographer is dew forming on your lens or telescope. Before I used chemical hand warmer to prevent the dew forming but finally decided to buy the Dew Remover
Dew-Not dew removal systems DNC02 Controller, Dew-Not dew removal systems DN005 for 4" Scope and Celestron Power Tank - Astrophotography
Dew Heater Astrophotography



Thursday, April 24, 2014

Leo Constellation Connecticut Astrophotography NightScape

“What do we call a group of stars that makes an imaginary picture in the sky?” the teacher asked.
“A consternation,” one student replied.

--Astronomy Jokes


Leo Constellation - Astroscape - Mystic Connecticut Astrophotography - Canon 40D, Ultra Wide Angle Canon Lens EF 16 35mm f2.8L II U

Leo Constellation Connecticut Astrophotography Nightscape

Wednesday, April 23, 2014

The Treworgy Planetarium at Mystic Seaport


The Treworgy Planetarium at Mystic Seaport

The Treworgy Planetarium at Mystic Seaport

Mystic Seaport Planetarium

Planetarium
Treworgy Planetarium

Planetarium program
Mystic Planetarium

Monday, April 14, 2014

Cloudy Lunar Eclipse NYC Brooklyn


Why couldn’t the astronaut book a room on the moon?
Because it was full.

--Astronomy Jokes

Cloudy Lunar Eclipse NYC Brooklyn
NYC Total Lunar Eclipse April 15 2014


Cloudy Lunar Eclipse NYC


Cloudy Spring Lunar Eclipse NYC 2014
Cloudy Moon
Lunar Eclipse as seen in Brooklyn April 15 2014

New York City Lunar Eclipse
Moon - Beginning of Lunar Eclipse 2014

Northeast Astronomy Forum NEAF 2014

Northeast Astronomy Forum NEAF 2014

ExploraDome Complete Observatory Northeast Astronomy Forum NEAF 2014
Astro Haven Northeast Astronomy Forum NEAF 2014
Explore Lens Astronomy Forum NEAF 2014
Astronomical Ties Northeast Astronomy Forum NEAF 2014
Northeast Astronomy Forum NEAF 2014
Explore Scientific Northeast Astronomy Forum NEAF 2014
iOptron Northeast Astronomy Forum NEAF 2014
High Point Northeast Astronomy Forum NEAF 2014