NGC 1535 (Gary Imm)

NGC 1535

This object, less than 1 minute in diameter, is a planetary nebula located 4000 light years away in the constellation of Eridanus at a declination of -13 degrees. It has a diameter of 1 light year. The magnitude 12 central star is clearly visible, surrounding by a bright inner scalloped ring. The outer outline is circular but the inner annulus has a bit of an oblong shape.

According to Stephen James O'Meara, this object has a bipolar inner shell which is being constricted by a ring of dense material in the equatorial plane of the central star. Our view from earth is looking down the major axis of an inverted funnel of gas. This view of the nebula structure is harder to visualize since our vantage point is looking end-on to the bipolar shell instead of perpendicular to it, as we do for other PN such as M76.

Some expert observers believe that this is the best PN for seeing through the eyepiece, where it looks anywhere from gray to pale blue.

This beautiful object has at least 3 stupid nicknames – Cleopatra’s Eye, the Ghost of Neptune, and the Celestial Jellyfish. I don’t like nicknames for several reasons, one of which is that it sets expectations of what this object is supposed to look like before we even see it. I favor letting the viewer soak in its beauty and true character without any predetermined ideas of its resemblance.

Images from the EdgeHD Series
Planetary Nebulae
CMOS Imagers
Cloudy Nights
Schmidt-Cassegrain Telescope (SCT) Imagers
ZWO ASI1600MM/QHY163M
Texas Astronomy

All of My PN Images (264)
Griffiths PN Catalog (Complete)
Hidden Treasures Catalog (Complete*)

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This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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Extremely wide field
Star trails
Northern lights
Noctilucent clouds
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Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Basic failed
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Astrometry.net job	4119522
PixInsight job	n/a
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