Correction to: J Opt https://doi.org/10.1007/s12596-023-01299-3

In this article references 18 and 24 were incorrectly given as

18. D. Vijeta, R.K. Kapri, S. Saha, V.K. Jaiswal, P. Sharma, Theoretical simulation for evaluating error in irradiance measurement using optical detectors having different cosine responses. Mapan 36(3), 473–480 (2021). https://doi.org/10.1007/s12647-021-00486-6

24. D. Vijeta, P. Sharma, V.K. Jaiswal, S. Saha, R. Mehrotra, Study of Array Detector Based Spectrophotometer for Sphere Photometry, in ICOL-2019. ed. by K. Singh, A.K. Gupta, S. Khare, N. Dixit, K. Pant (Springer), pp. 565–569 (2021). https://doi.org/10.1007/978-981-15-9259-1_130

and should have been as

18. Vijeta, R.K. Kapri, S. Saha, V.K. Jaiswal, P. Sharma, Theoretical simulation for evaluating error in irradiance measurement using optical detectors having different cosine responses. Mapan 36(3), 473–480 (2021). https://doi.org/10.1007/s12647-021-00486-6

24. Vijeta, P. Sharma, V.K. Jaiswal, S. Saha, R. Mehrotra, Study of Array Detector Based Spectrophotometer for Sphere Photometry, in ICOL-2019. ed. by K. Singh, A.K. Gupta, S. Khare, N. Dixit, K. Pant (Springer), pp. 565–569 (2021). https://doi.org/10.1007/978-981-15-9259-1_130

In the acknowledgement section, the last line,“This work has also been supported by the Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India”, should be removed and the correct acknowledgement section should read as below:

Acknowledgements The authors thank Director, CSIR–National Physical Laboratory for encouragement and support. Technical support from the members of the Optical Radiation Metrology group is acknowledged. Financial support from the Bureau of Energy Efficiency (BEE), the Ministry of Power, Government of India, for the LED testing and calibration facility is acknowledged. One of the authors, Vijeta is thankful to University Grant Commission (UGC) for providing the fellowship under the UGC-SRF scheme.