Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
  #1
The Melotte 15 Complex in Hydrogen-Alpha Light
Lens: 130/910mm refractor lens Camera: K3ii Photo Location: home balcony Ascheberg, Germany ISO: 800 Shutter Speed: Above 6s 
Posted By: Pete_XL, 10-05-2018, 12:35 AM

Melotte 15 is a cluster of young stars in the mid of the cloud complex IC1805 - the Heart Nebula - in the constellation Cassiopeia.

This is a so called narrowband image. Galactic cloud complexes that contain hydrogen-alpha gas send out light of a deep red wavelength when they receive strong radiation of nearby stars. The narrowband filter only lets through this wavelength and closes out all other colors and so also the light pollution.

The image was made from 56 images of 600s exposure @ ISO 800 with 12 nm Hydrogen-Alpha narrowband filter. The data were shot through a 130/910mm refractor with a stock Pentax K3ii.

Processing in Astro Pixel Processor and Photoshop CC2018


Views: 273
10-05-2018, 09:25 PM   #2
Loyal Site Supporter
Loyal Site Supporter
GeoJerry's Avatar

Join Date: Dec 2011
Location: Santa Barbara, CA
Photos: Gallery
Posts: 5,144
This one is also cool but I wish I could view these side by side on a large monitor so that I could see how your two posts compare.
10-06-2018, 12:15 AM   #3
Site Supporter
Site Supporter
Pete_XL's Avatar

Join Date: Mar 2010
Location: Germany
Photos: Gallery
Posts: 291
Original Poster
QuoteOriginally posted by GeoJerry Quote
This one is also cool but I wish I could view these side by side on a large monitor so that I could see how your two posts compare.
In this case they only differ in color because I took the black&white hydrogen alpha data for 100% of the luminance information. So it delivers all of the details and contrast. The color shot was taken only for the color values and distribution.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, cloud, filter, image, light, photo, stars, wavelength
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Nature The Melotte 15 Complex Pete_XL Post Your Photos! 6 10-06-2018 02:35 AM
Anyone here ever worked with COMPLEX.com ? Take-5-JB Photographic Industry and Professionals 9 04-23-2018 08:24 PM
is it safe for lens? Hydrogen Peroxide and Household Ammonia Chalupa Troubleshooting and Beginner Help 19 09-05-2012 07:10 AM
Sony alpha 580 vs Sony alpha 55 vs Canon EOS 60D vs Pentax K5 vs Nikon D7000 dexmus Pentax K-5 0 02-10-2011 10:31 AM
Drops of Di Hydrogen Oxide falling at 32.2 f/s/s Mr Hyde Post Your Photos! 0 08-19-2007 06:22 PM



All times are GMT -7. The time now is 10:20 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top