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Posts Made By: Dave Erickson

June 9, 2014 08:03 PM Forum: CCD Imaging and Processing/Deep Sky

Sagittaruis to the Pipe Nebula

Posted By Dave Erickson

Here is one taken remote last week near the galactic center...

June 10, 2014 11:42 PM Forum: Insects - Flowers and Other Small Stuff - Photos

A sure sign of Spring

Posted By Dave Erickson

Butterfly on flower

June 12, 2014 09:35 PM Forum: Landscape Photography

Yellowstone Mammoth Hot Springs

Posted By Dave Erickson

Well OK Linton, Here is one from a while back of Yellowstone's Mammoth Hot Springs travertine...

June 29, 2014 10:08 PM Forum: Landscape Photography

Sierra Wave Tahoe

Posted By Dave Erickson

Here is an image taken at sunset of lenticular clouds formed by the Sierra Wave over Lake Tahoe.

July 10, 2014 02:54 PM Forum: Home Observatories

3-Camera Wide Field Astrograph

Posted By Dave Erickson

Here is a CAD rendering of a 3-camera astrograph assembly and off axis guidescope. The parts are with a local machinist being made. I hope to have it operational next month.

July 11, 2014 03:58 PM Forum: CCD Imaging and Processing/Deep Sky

Wide field image of several nebula in Cygnus

Posted By Dave Erickson

Here is a HAlpha image of a group of nebula in Cygnus. This is centered roughly on LDN847 at 20h 3m, +35deg 11m. Sh2-99 and Sh2-100 are nebula in the the lower right. Sh2-101 is near the center to the right of LDN847

July 13, 2014 01:50 PM Forum: CCD Imaging and Processing/Deep Sky

Wide Field Cygnus Mosaic in HAlpha

Posted By Dave Erickson

Here is a 4-pane mosaic centered at 20h 7m +36deg 40m about 4X6 degrees. It includes NGC6888 Crescent Nebula Sh2-105 and Sh2-101 the Tulip Nebula, Barnard 147 and many others.

September 6, 2014 08:13 PM Forum: CCD Imaging and Processing/Deep Sky

IC4701, M18, Sh2-35, Sh2-40, M24, Sh2-41, Sh2-39

Posted By Dave Erickson

Taken with the 8" F/2.6 Astrograph The image includes the following objects from top to bottom IC4701, M18, Sh2-35, Sh2-40, M24, Sh2-41, Sh2-39 and friends.


July 19, 2015 05:34 PM Forum: CCD Imaging and Processing/Deep Sky

Cygnus H-alpha and Veil Nebula

Posted By Dave Erickson

A friend reminded me its been a while since my last post. Been busy on other astronomical stuff, imaging shock waves and the day job doing optical design work that pays the bills.

This is a common object to post, and a spectacular shock wave, so bear with me here...

Thought I'd add to the recent Cygnus H-alpha collection with one that includes a Super Nova Remnant G74.0 +08.5 better known as the Veil Nebula and surrounding area. An uncommon deep wide field view of the area.


August 2, 2015 04:21 PM Forum: CCD Imaging and Processing/Deep Sky

Sh2-190 Heart Nebula and Super Nova Remnant

Posted By Dave Erickson

Not imaged very often is a Super Nova Remnant (SNR) off the tip of the Heart Nebula. Here is a monochrome HAlpha image of a lovely filamentary SNR G133.7 +01.3. The image is centered on the SNR at 2h18m 53s and +62d 49m 17s this is (6) 20 minute sub frames taken over several nights in July 2015. Dave