Gallery Index

NGC 2237

Rosette Nebula

A large emission nebula wrapped around an open cluster

TypeNebula ConstellationMonoceros SeasonWinter PaletteNarrowband Integration timeNot recorded Captured2020

A wide Rosette Nebula frame centered on the open cluster that clears the heart of the nebula.

This frame remains part of the Lost Photons archive.

What am I looking at?
The Rosette Nebula is a large circular star-forming region whose central cluster has cleared a cavity in the gas.
How far away is it?
About 5,000 light-years away.
Where is it in the sky?
In Monoceros, near Orion in the winter sky.
Why does it matter?
A classic narrowband target showing how young stars hollow out their birth clouds.
When is the best time to photograph it?
Winter when Monoceros and Orion are high.
Target Planner

When to image this target

Nebula in Monoceros; best planned for December through February from New Jersey.

Best season December through February

Winter targets reward clear, steady nights and usually climb well by late evening.

Good from NJ Late autumn through winter nights

Assumes a New Jersey backyard horizon and evening imaging.

Object type Nebula

Emission nebulae are good candidates for narrowband filters; reflection nebulae prefer darker skies.

Constellation Monoceros

NGC 2237 is listed here in Monoceros.

Moon tolerance Narrowband can tolerate some moonlight.

Current frame: Narrowband / Ha, OIII, SII.

Live altitude, moon, and filter guidance
Planning from Sewell, NJ

Calculating target altitude and moon context.

Check your location Enter ZIP in planner

Use the full planner to enter a ZIP code, choose a date, and compare the target from your sky.

Planning values are approximate and update in your browser.

Planning site Sewell, NJ 39.7700, -75.1400
Current altitude ...

Based on the current time.

Target transit chart Compact altitude curve for this target over a full day. Target ...

Green marks usable dark-sky altitude.

Next transit ...

Next upper transit.

Rise / set ...

Approximate horizon crossing.

Moon now ...

Moon phase and altitude.

My gear vs this target

How I captured this

11h 20m Total integration
Optolong L-eNhance 2 Channels
Channel Frames Time
Optolong L-eNhance 2 54 x 300s, 08 x 300s, 37 x 600s 11h 20m
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