The July 2020 Bubble Nebula revision, captured before the deeper December processing run.
- What am I looking at?
- The Bubble Nebula is a sphere of gas blown by the intense stellar wind of a hot central star.
- How far away is it?
- About 7,100 light-years away.
- Where is it in the sky?
- In Cassiopeia, near the open cluster M52.
- Why does it matter?
- A striking example of how a single massive star can carve a bubble in interstellar gas.
- When is the best time to photograph it?
- Autumn when Cassiopeia is high.
Capture summary
Nebula in Cassiopeia
L-eNhance OSC
L-eNhance OSC
Summer target / wide composition
- L-eNhance 1h 30m 18 x 300s
- Totals 1h 30m
Same target, different years.
Older revisions stay in the archive so you can see how the target changed with different equipment, processing, and experience.
When to image this target
Nebula in Cassiopeia; best planned for June through August from New Jersey.
Summer targets often improve later at night as the Milky Way climbs higher.
Assumes a New Jersey backyard horizon and evening imaging.
Emission nebulae are good candidates for narrowband filters; reflection nebulae prefer darker skies.
NGC 7635 is listed here in Cassiopeia.
Current frame: Natural and narrowband blend / L-eNhance OSC.
Live altitude, moon, and filter guidance
Calculating target altitude and moon context.
Use the full planner to enter a ZIP code, choose a date, and compare the target from your sky.
Based on the current time.
Green marks usable dark-sky altitude.
Next upper transit.
Approximate horizon crossing.
Moon phase and altitude.
Acquisition & processing notes
Filter channels, integration times, and capture dates for this frame. View on AstroBin.
- Optolong L-eNhance 2 18 x 300s, 1h 30m
How I captured this
| Channel | Frames | Time |
|---|---|---|
| Optolong L-eNhance 2 | 18 x 300s | 1h 30m |
- Equipment used
- From my current rig
- Mount
- iOptron CEM60
- Telescope
- Explore Scientific FCD100 127mm Carbon Fiber Triplet APO
- Camera
- ZWO ASI2600MM Pro
- Filters
- Chroma 36mm Ha, OIII, SII, and LRGB (ZWO EFW 7×36mm)
- Focuser / rotator
- MoonLite NiteCrawler
- Reducer
- Starizona Apex ED 0.65×
- Guiding
- ZWO off-axis guider + ASI290MM Mini
- Control / power
- PrimaLuceLab Eagle 4S, Powerwerx PSU, Bioenno field battery, and MEGAbox
