Bukkei69

1000mm Newton + 4X Powermate

Powermate to scope

Telescope

CGEM RA runaway slew - CGEM RA 軸回転の暴走

M13 shot by Tomoki

before image processing

processed with Photoshop CS5

Draco Dwarf Galaxy

The image, taken by Chuck Kimball.
See the source URL of Chuck

M64 ー Nagaoka 氏との談義　from Facebook

Barnard Galaxy and Edwin Hubble

Camera Cooling #2

The box for the camera is modified. They were mounted on Vixen VC200L. M53, Globular Cluster and M95, Barred Spiral Galaxy were shot.
The sensor and the AL angle temperatures went down to 0C and -20C.

M53 Globular Cluster ISO3200 30 seconds Exposure, 5 lights, 20 darks and 20 flats

M95 Barred Spiral Galaxy with 30 lights, the other setting is same.

Sensr Temperature

Cooling for camera 4/22/2014

TEC and water cooling for camera

Based on the suggestion by J. Kubera in Canada, an external cooling for DSLR is built.

3″ x 2 ” aluminum angle (6063) is modified so that the verical face (3″ high) could have a good contact with the camera LCD screen and the bottom face (2″) with the camera bottom. See the extra plate tightened to the vertical face with 4 bolts. The CPU-Heat Sink paste is used to eliminate the air-gap.

The TEC element and the water jacket, glued by the manufacturer, is also tightened with a plate and 4 bolts.

Front view

The camera is pushed against the extra plate with the bottom 1/4″ bolt and, at the top area, with fishing line with hook and a spring.

A CPU fan and Silica Gel beads in a plastic box is put on top of the camera.

A fishing hook and line, pulling the camera body toward the metal plate

The thermometer shows the temperature on the top corner of the aluminum angle (on the LCD screen side).

Immersion type water pump and a bucket with water and ice

Test results, showing the temperature

Test results, comparing the “not cooled” and “cooled” cases

noise comparison (not cooled vs cooled)

NGC 4449 不規則銀河　Irregular Galaxy

アンテナ銀河　NGC 4038/4039 からす座－The Antennae Galaxies in Corvus 衝突する２つの銀河