- Adventures in Deep Space
- Provides descriptions on the collections of star systems. Also includes list of planetary nebulae with actual data.
- Arp’s Catalog of Peculiar Galaxies
- Contains photo gallery of star systems with discovery details. Includes factual reports and images of the observations.
- Astronomical Sketches
- Displays compilation of preliminary drawings of galaxies and other solar system objects. Includes observation details.
- Astronomy Made Easy
- Provides suggestions on selecting the instrument, capturing the images and operating the scope. Also updates atmospheric weather conditions.
- Bangkok Deep-Sky Objects Observing
- Observes and outlines the image of the astronomical body. Also exhibits sketch gallery of observed objects.
- Deep Sky Collections and Catalogs
- Provides factual information on the discoveries of the objects. With listings of observed entities and actual descriptions.
- Deep Sky Observing
- Provides information on the categorization of objects beyond the solar system. Presents techniques on finding and watching the targets.
- Deep Sky Sketching and Observing
- Showcases gallery of drawings and sketches of galaxies and nebulae, with observation details.
- Google Sky
- Provides access to images of the universe in different wavelengths.
- Ian’s Astro
- Displays sketch gallery of astronomical objects. Details construction of the piggy-back camera adapter.
- Introduction to Deep Sky Objects
- Presents glossary of astronomical terms. Also displays gallery of star cluster images.
- List of Common Deep Sky Catalogs
- Contains complete listings of discovered common objects beyond the solar system.
- Messier Marathon
- Contains instructions on how to locate and identify deep sky objects. Also features an online television stream from the National Aeronautics Space Administration.
- Messier45
- Features description details about Messier 45, a star cluster discovered by astronomer Charles Messier.
- Netastrocatalog
- Exhibits collections of deep sky discoveries, discussions and images. Also accepts online submission of observations with images and data.
- NGC / IC Project
- Showcases a catalog of deep sky objects with descriptions. Also presents information about RealSky View, an application program that is a part of the commercial software CCDSoft, used for CCD camera control and image processing.
- Psychohistorian
- Features instructional material that relates the practical methods of observing the objects beyond the solar system. Also contains an image gallery of deep sky bodies.
- Ray Cash’s Deep-Sky
- Contains image galleries of Hickson’s and Arp’s groups of galaxies.
- Sky and Telescope
- Displays an article that provides hints and tips on how to observe deep sky objects.
- Twinstar Guesthouse Observatory
- Presents an archive galaxy and nebulae drawings. With discovery accounts of the comet Seki-Lines.
- Utah Skies
- Contains galleries of charts showing images and descriptions of objects beyond the solar system. Also presents deep sky images taken with the Hubble Space Telescope.
- Visual Deep Observing
- Showcases collections of sketches of observed star systems and dust cloud formations. Also provides list of articles related with the study.
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