Photos by Del Johnson of San Diego, CA.

Photos by Del Johnson of San Diego, CA.

Helix Nebula
The Helix Nebula. One hour exposure on Kodak Multispeed Ektapress at prime focus of 12.5" f/5 with coma corrector and ST-4 autoguider. Omega Nebula
Omega Nebula taken with a 12.5" f5 Dobsonian on a Dual-axis Equatorial Platform using Kodak Ekt press PJM film. This 10 minute exposure was taken using a Lumicon Coma Corrector. Leo Triplet
M65, M66 and NGC 3628 in Leo. Prime focus of 12.5" f/5 reflector using the Lumicon Coma Corrector. Summation of three separate one hour exposures on Kodak 35mm Multispeed Ektapress print film, autoguided with ST-4 CCD. Negatives scanned and digitally stacked by Astro Photo.

Orion Nebula
45 minute exposure with Fuji ISO 100 Superia print film 12.5" f/5 prime focus with Lumicon coma corrector and ST-4 autoguider, off-axis Lagoon Nebula
Here is a 15-minute exposure of the Lagoon Nebula on Kodak PJM Ektapress film, using a 12.5" f/5 reflector and a Lumicon coma corrector. Manually guided. Trifid Nebula
This fine photo of the Trifid Nebula is a combination of three ten-minute exposures that were digitized and combined to produce the final image. Photos taken by Del Johnson using a 12.5" Dobsonian on a dual-axis Equatorial Platform. Film used was Kodak Ektapress Multispeed.

Crescent Nebula
50 minute exposure at prime focus of a 12.5" f/5 reflector with a Lumicon coma corrector, Kodak PJM Ektapress Multispeed film. Guided with an ST-4. Veil Nebula Western Section
50 minute exposure at prime focus of a 12.5" f/5 reflector with a Lumicon coma corrector, Kodak PJM Ektapress Multispeed film. Guided with an ST-4. Veil Nebula Eastern Section
50 minute exposure at prime focus of a 12.5" f/5 reflector with a Lumicon coma corrector, Kodak PJM Ektapress Multispeed film. Guided with an ST-4.

The Horsehead Nebula
60 minute exposure at prime focus of a 12.5" f/5 reflector with a Lumicon coma corrector, Kodak PJM Ektapress Multispeed film. Guided with an ST-4. NGC 7331 & Stephens Quintet
60 minute exposure at prime focus of a 12.5" f/5 reflector with a Lumicon coma corrector, Kodak PJM Ektapress Multispeed film. Guided with an ST-4. Virgo Cluster
M84, M86 and other galaxies in the Virgo Cluster. Prime focus of 12.5" f/5 reflector using the Lumicon Coma Corrector. One hour exposure on Kodak 35mm Multispeed Ektapress print film, autoguided with ST-4 CCD. Negative scanned by Astro Photo.

Here is an article that Del Johnson wrote on using an ST-4 to autoguide with his Equatorial Platform.

Photos by Del Johnson of San Diego, CA.

Helix Nebula The Helix Nebula. One hour exposure on Kodak Multispeed Ektapress at prime focus of 12.5" f/5 with coma corrector and ST-4 autoguider.	Omega Nebula Omega Nebula taken with a 12.5" f5 Dobsonian on a Dual-axis Equatorial Platform using Kodak Ekt press PJM film. This 10 minute exposure was taken using a Lumicon Coma Corrector.	Leo Triplet M65, M66 and NGC 3628 in Leo. Prime focus of 12.5" f/5 reflector using the Lumicon Coma Corrector. Summation of three separate one hour exposures on Kodak 35mm Multispeed Ektapress print film, autoguided with ST-4 CCD. Negatives scanned and digitally stacked by Astro Photo.

Orion Nebula 45 minute exposure with Fuji ISO 100 Superia print film 12.5" f/5 prime focus with Lumicon coma corrector and ST-4 autoguider, off-axis	Lagoon Nebula Here is a 15-minute exposure of the Lagoon Nebula on Kodak PJM Ektapress film, using a 12.5" f/5 reflector and a Lumicon coma corrector. Manually guided.	Trifid Nebula This fine photo of the Trifid Nebula is a combination of three ten-minute exposures that were digitized and combined to produce the final image. Photos taken by Del Johnson using a 12.5" Dobsonian on a dual-axis Equatorial Platform. Film used was Kodak Ektapress Multispeed.

Crescent Nebula 50 minute exposure at prime focus of a 12.5" f/5 reflector with a Lumicon coma corrector, Kodak PJM Ektapress Multispeed film. Guided with an ST-4.	Veil Nebula Western Section 50 minute exposure at prime focus of a 12.5" f/5 reflector with a Lumicon coma corrector, Kodak PJM Ektapress Multispeed film. Guided with an ST-4.	Veil Nebula Eastern Section 50 minute exposure at prime focus of a 12.5" f/5 reflector with a Lumicon coma corrector, Kodak PJM Ektapress Multispeed film. Guided with an ST-4.

The Horsehead Nebula 60 minute exposure at prime focus of a 12.5" f/5 reflector with a Lumicon coma corrector, Kodak PJM Ektapress Multispeed film. Guided with an ST-4.	NGC 7331 & Stephens Quintet 60 minute exposure at prime focus of a 12.5" f/5 reflector with a Lumicon coma corrector, Kodak PJM Ektapress Multispeed film. Guided with an ST-4.	Virgo Cluster M84, M86 and other galaxies in the Virgo Cluster. Prime focus of 12.5" f/5 reflector using the Lumicon Coma Corrector. One hour exposure on Kodak 35mm Multispeed Ektapress print film, autoguided with ST-4 CCD. Negative scanned by Astro Photo.
Here is an article that Del Johnson wrote on using an ST-4 to autoguide with his Equatorial Platform.