Latest Afocal Photography at Flickr.com

20180318_2048

dw_ross posted a photo:

20180318_2048

Afocal photography, sometimes called digiscoping, simply means that a camera with a taking lens is used where an observer's eye would normally be, looking into the microscope (or telescope) through the eyepiece or ocular. Execution, however, is not especially simple if the photographer wants to collect multiple images so that focus-stacking software can be used to increase the depth of field. The only thing that should move between exposures is the subject, and this movement is controlled by slight adjustments of the fine focus knob on the microscope.

The technique shown here involves a tripod with a geared central column for smooth vertical positioning, a 3-way Manfrotto 3028 tripod head to hold the camera at the same angle as the microscope viewing tube, a Velbon Macro Slider for fine control of on-axis and lateral movement of the camera, and a taking lens with a focal length chosen to minimize or eliminate vignetting of the field of view. A remote shutter release is essential, and the electronic shutter of the Nikon V1 is a plus.

Sun, 18 Mar 2018 17:04:29 -0700
nikond700 micronikkorpc 55mmf35ai afocal microscope sb600 ceilingbounce
Crater Copernicus

atgc_01 posted a photo:

Crater Copernicus

en.wikipedia.org/wiki/Copernicus_(lunar_crater)

Afocal photography with Lumix LX3 through a telescope and Plossl 32 mm & 3X Barlow.

Sat, 24 Feb 2018 23:59:52 -0800
lumix lx3 afocal telescope moon plossl32 barlow

The Moon February 24 2018

atgc_01 posted a photo:

The Moon February 24 2018

HDR Composition of 5 images stitched with Microsoft ICE. Afocal photography with Lumix LX3 through a telescope and Plossl 32 mm & 2X Barlow.

Sat, 24 Feb 2018 23:59:52 -0800
lumix lx3 afocal telescope moon plossl32 barlow
Supermoon 2018 (uncropped)

Petr Hykš posted a photo:

Supermoon 2018 (uncropped)

I took this image holding my DSLR camera above my telescope eyepiece (afocal).

Just some casual brightness adjustments, chromical abberation removal and sharpening (Digital Photo Professional & GIMP). This is an UNCROPPED version - original size. You can imagine how hard it was to fit the whole supermoon on camera display.

I would like to compare this image later with minimoon 2018, when lunar disc appears smallest (Moon at perigee) - an opposite to supermoon (Moon at perigee). It will be on July 27th, when an amazing total lunar eclipse will be (hopefully) visible, too.

Telescope details
refractor Celestron Powerseeker 50AZ
focal lenght: 600 mm
lens: 50 mm
eyepiece 20 mm

Wed, 03 Jan 2018 04:54:40 -0800
supermoon 2018 moon luna space astronomy telescope dslr afocal uncropped celestron powerseeker

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Sun Metron posted a photo:

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from the LEM

Mon, 01 Jan 2018 19:43:35 -0800
fullmoon meade meade4500 afocal freehand wolfmoon
Moon_2017_12_31

atgc_01 posted a photo:

Moon_2017_12_31

Almost Super Moon - 221,800 miles from Earth

Mon, 01 Jan 2018 10:14:34 -0800
lumix lx3 afocal telescope plossl32 moon supermoon

ParialSolarEclipse_25Dec2000_HomCavObservatory

homcavobservatory posted a photo:

ParialSolarEclipse_25Dec2000_HomCavObservatory

The attached image was taken 17 years ago today in near blizzard conditions from our home in upstate NY.

Image Details: A screen capture from SpaceWeather's gallery at the time, the image is of the partial eclipse that occurred on Christmas Day 2000. Taken by Jay Edwards using a hand-held Panasonic camcorder in afocal mode through an 80MM refractor with a 25mm eyepiece, although the image is extremely low resolution (mainly due to the equipment used at the time combined with the fact that it's a screen capture), in spite of the horrible seeing conditions, visually, it actually appeared quite nice.

Mon, 25 Dec 2017 07:05:06 -0800
homcav observatory partial solar eclipse christmas 2000 80mm refractor panasonic camcorder afocal astronomy astrophotography
Moon_2017_12_01_HDRX

atgc_01 posted a photo:

Moon_2017_12_01_HDRX

afocal photography through a telescope eyepiece

Fri, 01 Dec 2017 23:45:55 -0800
lumix lx3 afocal telescope plossl32 moon hdr

Schroter's Valley (afocal photography through a telescope eyepiece)

atgc_01 posted a photo:

Schroter's Valley (afocal photography through a telescope eyepiece)

Schroter's Valley, frequently known by the Latinized name Vallis Schröteri, is a sinuous valley or rille on the surface of the near side of the Moon. It is located on a rise of continental ground, sometimes called the Aristarchus plateau, that is surrounded by the Oceanus Procellarum to the south and west and the Mare Imbrium to the northwest. At the southern edge of this rise are the craters Aristarchus and Herodotus.

This is the largest sinuous rille on the Moon. It begins at a 6 km diameter crater located 25 km to the north of Herodotus. (The start of the rille has been termed the "Cobra's Head" by some observers, due to its resemblance to a snake.) From the crater it follows a meandering path, first to the north, then setting a course toward the northeast, before finally bending back to the south until it reaches a 1 km high precipice at the edge of the Oceanus Procellarum. The rille has a maximum width of about 10 km, then gradually narrows to less than a kilometer near its terminus.

The origins of this rille are believed to be volcanic. The interior floor has been resurfaced and is very level. However there is a slender rille located on the floor, which can be photographed from Earth with a good telescope and good seeing.

The rille has been the subject of numerous transient lunar phenomena observations.

en.wikipedia.org/wiki/Schroter%27s_Valley

Fri, 01 Dec 2017 08:44:36 -0800
lumix lx3 afocal telescope plossl32 barlow 3x moon schrotersvalley
Moonscape #3

atgc_01 posted a photo:

Moonscape #3

Thu, 30 Nov 2017 22:53:45 -0800
moon afocal telescope lumix lx3 plossl32

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