Nikon AF-S Nikkor 300mm F/2.8 ED Test - New (andrea tasselli)

Celestial hemisphere: Northern · Constellation: Ursa Minor (UMi) · Contains: 1 UMi) · 23 UMi) · Alrucaba · Cinosura · Mismar (α UMi · Part of the constellation Ursa Minor (UMi) · The star 24 UMi · The star Polaris · The star Yildun · The star λ UMi · Tramontana · Vildiur (δ UMi · Yilduz

Nikon AF-S Nikkor 300mm F/2.8 ED Test - New, andrea tasselli

Powered byPixInsight

Nikon AF-S Nikkor 300mm F/2.8 ED Test - New

Powered byPixInsight

Nikon AF-S Nikkor 300mm F/2.8 ED Test - New

This is another test of the unbelievably good Nikkor AF-S 300 mm f/2.8 (D). In my previous test I was using a D7000 which is a bit passe' and has a pixel pitch of 4.78 um. On my D5100 (same pixel pitch) the rightmost 1/3 suffers from significant off-axis aberrations (an indication of tilt) and the image produced can be massively under-sampled. In order to rectify the issues I decided to get a modern CMOS cooled camera sporting a IMX571 sensor for this lens in order to get better sampling (and possibly no tilt). So with some trepidation I went on with my lens' routine test. As it happens it was Full Moon with passing clouds and as this could have been my only chance for testing in weeks I went for it.

Surprise surprise, the image is still way under-sampled with a median FWHM of 4.9", which for a sampling of 2.63"/px, yields a FWHM of 1.8 px that is only slightly better than the previous results (~1.6) but with the added bonus of a 27% increase in resolution. Better still, tilt is gone. This lens is really a keeper and there is just no refractor out there which can compete at the same image scale and focal ratio, period.

N.B.: the background mottling is due to the terrible background residuals due to both transiting clouds and Full Moon.

AstroBin Platform open discussions community forum

Lens Tests

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

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
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

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
Own remote observatory
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 success
Started	...
Astrometry.net job	9550843
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

Nikon AF-S Nikkor 300mm F/2.8 ED Test - New

Nikon AF-S Nikkor 300mm F/2.8 ED Test - New

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

In these collections

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Nikon AF-S Nikkor 300mm F/2.8 ED Test - New

Nikon AF-S Nikkor 300mm F/2.8 ED Test - New

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

In these collections

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information