M 101 - Pinwheel Galaxy

Sep 2025
M 101
author image @jeremy Redford, MI

1

Pinwheel Galaxy

Lights

Filter NO FILTER
Lights 238
Single Exposure 25 sec
Total Exposure 1 hr 39 min
Gain 101
Offset 200
Temp (°C) -10.0 °C

Equipment

Camera ZWO Seestar S50
Telescope ZWO Seestar S50
Reducer None
Guide Camera ZWO Seestar S50
Guider None
Mount ZWO Seestar
Tripod ZWO Carbon Fiber Tripod TC40
Filter Wheel None
Eaf ZWO Seestar
Dew Heater ZWO Seestar

Nights

Capture Dates Moon Illumination
14 September 2025 Waning Gibbous (54.66%)

Software

Acquisition
Processing

M 101 - NGC 5585

Jul 2026
M 101
author image @jeremy Redford, MI

2

NGC 5585 is a spiral galaxy in the M101 Group with an unusually high dark matter content. Its rotation curve indicates one of the highest dark matter fractions measured in any galaxy.

Lights

Filter NO FILTER NO FILTER NO FILTER NO FILTER
Lights 3534 5 260 141
Single Exposure 10 sec 20 sec 30 sec 60 sec
Total Exposure 9 hr 49 min 1 min 40.000000 sec 2 hr 10 min 2 hr 21 min
Gain 80 80 80 80
Offset 200 200 200 200
Temp (°C) -10.0 °C -10.0 °C -10.0 °C -10.0 °C

Equipment

Camera ZWO Seestar S30
Telescope ZWO Seestar S30
Reducer None
Guide Camera ZWO Seestar S30
Guider None
Mount ZWO Seestar
Tripod NEEWER M521 20" Portable Desktop Mini
Filter Wheel None
Eaf ZWO Seestar
Dew Heater ZWO Seestar
Rotator K&F CONCEPT FH-03 Fluid Head

Nights

Capture Dates Moon Illumination
01 June 2026 Full Moon (99.41%)
02 June 2026 Waning Gibbous (97.34%)
03 June 2026 Waning Gibbous (93.57%)
04 June 2026 Waning Gibbous (88.2%)
05 June 2026 Waning Gibbous (81.37%)
06 June 2026 Waning Gibbous (73.25%)
07 June 2026 Waning Gibbous (64.06%)
14 June 2026 Waning Crescent (2.01%)
15 June 2026 Waning Crescent (0.18%)
16 June 2026 Waxing Crescent (1.45%)
22 June 2026 Waxing Crescent (51.44%)
23 June 2026 Waxing Gibbous (61.47%)
24 June 2026 Waxing Gibbous (70.8%)
25 June 2026 Waxing Gibbous (79.16%)
26 June 2026 Waxing Gibbous (86.33%)
27 June 2026 Waxing Gibbous (92.13%)
28 June 2026 Waxing Gibbous (96.4%)
29 June 2026 Waxing Gibbous (99.02%)
30 June 2026 Full Moon (99.88%)
01 July 2026 Waning Gibbous (98.93%)
02 July 2026 Waning Gibbous (96.16%)

Software

M 101 - Pinwheel Galaxy

Mar 2026
M 101
author image @jeremy Redford, MI

1

Pinwheel Galaxy Seestar Collective https://stcollective.net/

Lights

Filter

Equipment

Camera ZWO Seestar S50
Telescope ZWO Seestar S50
Reducer None
Guide Camera ZWO Seestar S50
Guider None
Mount ZWO Seestar
Tripod ZWO Carbon Fiber Tripod TC40
Filter Wheel None
Eaf ZWO Seestar
Dew Heater ZWO Seestar

Nights

Capture Dates Moon Illumination
13 February 2026 Waning Crescent (19.19%)

Software

Acquisition No acquisition software recorded.
Processing